in chemical equation h2+i2=2hi the equilibrium constant kp depends on

D) a decrease in the total volume of the reaction vessel (T constant) Part A: Use the wattage of the lightbulb and the time it is on to calculate the heat transferred, q, in joules. D) 2HI (g) H2 (g) + I2 (g) B. Xd + 2 H+ 2 Xd+ + H2 . What Is The Equilibrium Expression For H2 I2 2Hi? Quick Answer A. Bangladesh, (+ [Nickel and aluminum electrodes are used to build a galvanic cell. 52) - A gas can be converted into a liquid by heating. B) The equilibrium partial pressure of BrCl (g) will be 4.00 atm. Consider the chemical equation and equilibrium constant at 25C: A. NH4+/NH3 c. Which metal in the list is most reactive? D -511. - The relationship between vapor pressure and temperature is not linear, but rather, it is exponential. You can likewise reconsider all Chemistry sections appropriately and save time during your group tests and tests. 46) Understudies able to speed up and precision in settling these inquiries are expected to rehearse however much as could be expected. - A gas can be converted into a liquid by increasing the pressure of a gas sample. A) 2HI (g) H2 (g) + I2 (g) C. The anomaly of carbon dioxide is that it has a CP but no TP. What happens to the vapor pressure of a substance when the temperature is increased? B -423 1.72 Q: Pb2+(aq)+Mg(s)Pb(s)+Mg2+(aq). 348) B. All reactant and product concentrations are constant at equilibrium. Exams . In chemical equation H2(g) + I2(g)2HI (g) the equilibrium constant Kpdepends onSee more. A galvanic cell designated as Which of the following signs on q and w represent a system that is doing work on the surroundings, as well as gaining heat from the surroundings? A. Business, Finance, Economics, Accounting, Operations Management, Computer Science, Electrical Engineering, Mechanical Engineering, Civil Engineering, Chemical . 91) A) The equilibrium partial pressures of Br2, Cl2, and BrCl will be the same as the initial values. A. Xd(s) | Xd2+(aq) || H+(aq) | H2(g) | Pt Sweden, (+ 91) E. +4087 J mol-1, From Midterm Exam 2: y+4y+5y=26e3t,y0=1,y0=5. [Calculate the freezing point and boiling point in each solution, assuming complete dissociation of the solute] A. Hydrogen and iodine react to form hydrogen iodide, like this: H_2 (g 992) C. N2 [Acid rain over the Great Lakes has a pH of about 4.6.] Understudies who are concentrating in CBSE, ICSE, IGCSE schools as well as different State Board schools. Mexico, (+ C. 16.6 kJ C) K does not depend on the concentrations or partial pressures of reaction components. Calculate the standard enthalpy change for the reaction B. removing O2 CH4(g)+Cl2(g)CH3Cl(g)+HCl(g), H=99.60 kJ C) N2 (g) + 2O2 (g) 2NO2 (g) Q: What is the mole fraction of hexane? A. Tap on the individual Chapter connection of twelfth Standard Chemistry you need to practice and profit the comparing points MCQ Quiz Questions. Dynamic equilibrium in a chemical reaction is the condition in which the rate of the forward reaction is lower than the rate of the reverse reaction. 07: Equilibrium / Chemistry Part-I - philoid.com In chemical equation H2(g) + I2(g) 2HI(g), the equilibrium Kp depends on. 20) 5.99 torr Zimbabwe, (+ At body temperature (37C), Kw=2.41014] D. 1.72 J/(g C), The temperature rises from 25.00C to 29.00C in a bomb calorimeter when 3.50 g of sucrose undergoes combustion in a bomb calorimeter. Please Help 1. In an experiment, 1.0 mol each of H 2 (g) and I CBSE MCQs for all the classes and subjects are provided online or you can view them on our site. Cd(s) + 2 Ag+(aq) Cd2+(aq) + 2 Ag(s), Calculate E cell What is the need of NCERT Solutions and CBSE MCQs? A. What is the hydronium ion concentration of a 0.150 M hypochlorous acid solution with K a = 3.5 10-8? E. The reverse reaction is favored. Calculate Erxn for the combustion of sucrose in kJ/mol sucrose. Mexico, (+ - A liquid can be converted to a gas by heating. The best strategy to follow while answering the MCQ Questions for exams is to go through the question as many times as possible and understand it clearly. D. 39.5 C, In general, which of the following types of force/interaction is responsible for the existence of the condensed phases of matter? E) all of the above, 32) Consider the following reaction at equilibrium: Denmark, (+ Relationships between chemical equations and the expressions of equilibrium constants The expression of equilibrium constant depends on how the equilibrium equation is written. D. 13.16 960) 2.65 2HI (g) H2 (g) + I2 (g) A) 100 B) 0.50 C) 0.020 D) 2500 E) -50 C) 0.020 13) The Keq for the equilibrium below is 50. 0.13 M C. 4.3 M D. 0.039 M Assume excess SiO2. Tajikistan, (+ is Keq = 3.6 10-3 at 999 K. At equilibrium, ________. When a reactio. E. 13.02, From Midterm Exam 2: chemical equilibrium class-11 1 Answer +1 vote answered Feb 2, 2022 by Princebarnwal (34.9k points) selected Feb 6, 2022 by Jeewant Best answer For the given reaction, Kp = (pH I)2 (pH 2)(P I 2) ( p H I) 2 ( p H 2) ( P I 2) Match each term in Column A with its corresponding description in Column B. adulthood. B) reactants predominate C. 12.28 48) Comprehend the ideas and practice Objective Type Questions for twelfth Class Chemistry however much you can to score well. Spain, (+ C. 0.037 Solved Hydrogen iodide undergoes decomposition according to - Chegg The total number of stars for this article is: 5 in 1 review. A. O2 E. All of these have intermolecular forces stronger than dispersion. What is the value of Keq for the following reaction? A reversible reaction can proceed in both the forward and backward directions. 1/2 N2(g) + O2(g) NO2(g) Hrxn = +33 kJ C. H3O+/OH- B. Swaziland, (+ Calculate the standard cell potential, Ecell, for the cell defined by the reaction 7) In chemical equation H2 (g) I2 (g) 2HI (g) the equilibrium constant The amounts of H 2 and I 2 present D Temperature Medium Solution Verified by Toppr Correct option is D) The equilibrium constant does not change at all with changes in concentrations, volume, pressure, presence of catalyst, etc. B. Intramolecular forces Guinea, (+ 2SO2 (g) + O2 (g) 2SO3 (g) B. PART A: Click to share on Facebook (Opens in new window), Click to share on Twitter (Opens in new window), Click to share on LinkedIn (Opens in new window), Click to share on Reddit (Opens in new window), Click to share on Tumblr (Opens in new window), Click to share on Pinterest (Opens in new window), Click to share on Pocket (Opens in new window), Click to share on Telegram (Opens in new window), Click to share on Skype (Opens in new window), Click to share on WhatsApp (Opens in new window), General Principles and Processes of Isolation of Elements Class 12 MCQ Questions, The p-Block Elements Class 12 MCQ Questions, The d-and f-Block Elements Class 12 MCQ Questions, Coordination Compounds Class 12 MCQ Questions, Haloalkanes and Haloarenes Class 12 MCQ Questions, MCQ Questions for Class 12 Chemistry Chapter 1 The Solid State with Answers, MCQ Questions for Class 12 Chemistry Chapter 2 Solutions with Answers, MCQ Questions for Class 12 Chemistry Chapter 3 Electrochemistry with Answers, MCQ Questions for Class 12 Chemistry Chapter 5 Surface Chemistry with Answers, MCQ Questions for Class 12 Chemistry Chapter 6 General Principles and Processes of Isolation of Elements with Answers, MCQ Questions for Class 12 Chemistry Chapter 7 The p-Block Elements with Answers, MCQ Questions for Class 12 Chemistry Chapter 8 The d-and f-Block Elements with Answers, MCQ Questions for Class 12 Chemistry Chapter 9 Coordination Compounds with Answers, MCQ Questions for Class 12 Chemistry Chapter 10 Haloalkanes and Haloarenes with Answers, Chemistry MCQs for Class 12 Chapter Wise with Answers PDF Download. 4) Which of the following expressions is the correct equilibrium-constant expression for the equilibrium between dinitrogen tetroxide and nitrogen dioxide? A 43.9-g piece of copper (C_Cu= 0.385 J/gC) at 135.0C is plunged into 254 g of water at 39.0C. - 1.92 x 103 kJ/mole Q: How long will it take for 15% of the U238 atoms in a sample of U238 to decay? B) 1.56 104 Coming up next are not many significant advantages of CBSE MCQs with Answers for Class 12 Chemistry distributed by cbseMCQ.com: Q1. Part A: What is the value of E for the combustion of the fuel? A. C. The reaction mixture will contain equal concentrations of A and B. 31) For the equilibrium of the dissociation reaction of the compound 'A2', the concentrations were found to be [A2] = 0.022 M and [A] = 0.13 M at 25C: A. Arsenic acid (H3AsO4) is a polyprotic acid with Ka1 = 5.510-3, Ka2 = 1.710-7, and Ka3 = 5.110-12. 92) Zimbabwe. B. The system is losing 115 J, while the surroundings are gaining 115 J, A. energy associated with the temperature of an object, D. energy associated with the motion of an object, D. energy associated with the position or composition of an object. 32) Provide an explanation. The vapor pressure of a certain sample has been measured at two different temperatures and the results are P1 = 160 kPa at T1 = 240 K and P2 = 840 kPa at T2 = 270 K. Determine the molar vaporization enthalpy, Hvap, from these results. B. density From Midterm 3: Determine the value of the missing equilibrium constant. What is the vapor pressure of propane at 25.0 C? 2HI (g) = H2 (g) + I2 (g) Kp = 0.016 If 2.58 atm of HI (g) is sealed in a flask, what is the partial pressure of each gas. where n represents the stoichiometric coefficients] 966) C. K>1 Finland, (+ B) [SO2] / [SO3] Nepal, (+ India, (+ Enter the email address you signed up with and we'll email you a reset link. B. K=0 A. Poland, (+ Consider the following reaction: H2 (g) + I2 (s) ---> 2HI (g) TriangleH Q: Find the value of the [H3O+] of rain over the West Coast that has a pH of 5.5. The equilibrium mixture contained 1.37 10 2 M HI, 6.47 10 3 M H2, and 5.94 10 4 M I2. What is dynamic equilibrium? Ukraine, (+ The equilibrium constant expression for the reaction is Kc = [HI]2 [H2][I2] Substituting the equilibrium concentrations into the equilibrium expression, Kc = (0.30)2 (0.012)(0.15) = 50 The magnitude of the equilibrium constant is 50 for the temperature at which the data was collected. B.54.4 J Nepal, (+ D. CO For the reaction H2(g) + I2(g) 2HI(g) The equilibrium constant Kp B) 1.9 10-14 A -253 D. 4.60. Consider the chemical equation and equilibrium constant at 25C: H2 (g)+I2 (g)2HI (g) , K=6.2102 Calculate the equilibrium constant for the following reaction at 25C: HI (g)12H2 (g)+12I2 (g) Pakistan, (+ South Africa, (+ C. +873 J mol-1 Q: What is the pH of a 0.240 M ammonia solution? Using the equilibrium constant calculated in 2, calculate . E. 9.40, A mixture containing 20.6 g of ice (at exactly 0.00 C) and 70.3 g of water (at 62.9 C) is placed in an insulated container. E. Xe. Hrxn = ? Nigeria, (+ DOC Chapter 14 - CHEMICAL EQUILIBRIUM E. none of the above. You can utilize the quick links on our page to view or download the CBSE MCQs of all classes in an easy way. Portugal, (+ Compute the pH at 25C after 3 mL of the base has been added. From Midterm 3: Detailed description of the questions is given by subject experts and you can use them as a reference during your preparation. A. E. dispersion. At 100 C and 1 atm, water is in which phase? 268) D. 0.117 M H2 (g) + I2 (g) 2HI (g) What is the value of Keq for the following reaction? Additionally, you can reconsider all Chemistry sections appropriately whenever and save significant season of yours during class tests and yearly tests readiness. For a process at constant pressure, 49,600 calories of heat are released. B) 0.50 What is the stoichiometric coefficient of Xx(s) in the balanced reaction equation for that cell ? C. 0.222 It can be represented as. B. A. 234) D) increase the rate at which equilibrium is achieved without changing the composition of the equilibrium mixture [Butane (C4H10) has a heat of vaporization of 22.44 kJ/mol and a normal boiling point of -0.4 C. (iii) The total pressure increases as the system approaches equilibrium. (Assume ideal behavior.). The lightbulb is turned on for 0.015 h, and the assembly expands from an initial volume of 0.90 L to a final volume of 5.89 L against an external pressure of 1.0 atm] These numerous decision inquiries for Chemistry Class 12 will assist with further developing logical and complex issue unraveling abilities. A) 100 The heat capacity of the calorimeter is 4.90 kJ/C. Phenomenon after H2 (hydrogen) reacts with I2 (iodine) This equation does not have any specific information about phenomenon. 7) Swaziland, (+ C 185 D. 456 kJ - A liquid can be converted to a gas by cooling. is Keq = 230 at 300 C. If the temperature is raised, then the forward reaction is favored. The equilibrium-constant expression depends on the _____ of the reaction. 0.556 Carbonyl fluoride, COF2, is an important intermediate used in the production of fluorine-containing compounds. C. 1.92 x 103 kJ/mole C. 2.13 10-14 A. Le Chtelier's principle predicts that the equilibrium partial pressure of CO (g) can be maximized by carrying out the reaction ________. Ag+(aq)+eAg(s)Co2+(aq)+2eCo(s)Cu2+(aq)+2eCu(s)Pb2+(aq)+2ePb(s)Zn2+(aq)+2eZn(s)voltage=+0.80Vvoltage=0.28Vvoltage=+0.34Vvoltage=0.13Vvoltage=0.76V. B) N2O4 (g) 2NO2 (g) 87.0C . 5) Which of the following expressions is the correct equilibrium-constant expression for the following reaction? Bahrain, (+ Hungary, (+ A. A B + C A. increase product 25) At 400 K, the equilibrium constant for the reaction At equilibrium, ________. Russia, (+ N2 (g) + 3H2 (g) 2NH3 (g) D) Q does not depend on the concentrations or partial pressures of reaction components. E. increase pressure, The following reaction is exothermic. Q: What is the theoretical cell potential assuming standard conditions? E. The equilibrium constant K as well as [A] and [A2] are unchanged. United States, (+ What is the mole fraction xA of liquid A in this mixture. Hydrogen and iodine react to form hydrogen iodide, like this: H_2 (g) + I_2 (g) rightarrow 2 HI (g) Also, a chemist finds that at a certain temperature the equilibrium mixture of hydrogen, iodine, and hydrogen iodide has the following composition: Calculate the value of the equilibrium constant K_p for this reaction. D. - 1.23 x 103 kJ/mole. 48.6 C Example: 4.00 moles of HI are placed in an evacuated 5.00 L flask and then heated to 800 K. The system is allowed to reach What will be the equilibrium concentration of each species? A. PO43- C. 5.25 J/(g C) If you find. Maldives, (+ By rehearsing more second Year Chemistry MCQs with Answers Pdf Download, understudies can work on their speed and exactness which can help them during their board test. HNO2 4.6104 Belgium, (+ A) [H+][HCO3-] / [CO2] E. 48.1 J, [A 100-W lightbulb is placed in a cylinder equipped with a moveable piston. B. So, visit our site and easily find MCQs for all subjects classwise. E. H3O+. The specific heats of ice, water, and steam are 2.09 J/gK, 4.18 J/gK, and 1.84 J/gK, respectively. C. -2.97C 07 H2(g) Nonmetal Gas 2 00 L container and goes to equilibrium at 200 oC 00 L container and goes to equilibrium at 200 oC. E. Xd + 2 H+ Xd2+ + H2. For both acid and base, 'strong' means fully dissociated. Find the equilibrium amounts of these compounds if they all start out at 0.120 M. Solution: Determine Qc so that you know which direction the reaction will proceed. C) addition of some to the reaction vessel (V and T constant) 26) Which of the following statements is true? B. E) The reaction will go to completion since there are equal amounts of Br2 and Cl2. E. There is not enough information to calculate the Kw. 977) The equilibrium constant is given for one of the reactions below. D) only products are present 992) 31) D. Nothing can be concluded about K from Ecell. A. y+4y+5y=26e3t,y0=1,y0=5.y^{^{\prime \prime }}+4y^{^{\prime Is there any website that covers MCQ Questions for CBSE Class 6 to 12? Hydrogen iodide can decompose into hydrogen and iodine gases. 2HI (g Provide your answer in units of volts (V). Chemistry MCQ For Class 12 Chapter astute with Answers PDF Download. Dynamic equilibrium in a chemical reaction is the condition in which the rate of the forward reaction is higher than the rate of the reverse reaction. C. remove reactant D. 1.85 2SO3 (g) 2SO2 (g) + O2 (g) A. Erxn can be determined using constant volume calorimetry. 3.48 J/(g C) By this, you can dominate CBSE Class 12 Chemistry and play with words without any problem. E. 29.8 kJ mol-1, What is the conjugate base of H2PO4- ? 351) For the reaction : 2HI(g) H2 (g)+ I2 (g), the degree of dissociated () of HI(g) is related to equilibrium constant Kp by the expression: For the reaction H2(g) + I2(g) 2HI(g) the equilibrium constant kp changes with. He(g) 971) Germany, (+ C. 0.00048 20) The equilibrium constant (K ) would be __________. E) 4 Fe (s) + 3 O2 (g) 2 Fe2O3 (s), 29) Which reaction will shift to the right in response to a decrease in volume? B) N2 (g) + O2 (g) 2NO (g) B) [CO2] / [H+][HCO3-] +238 kJ D. 25.0 g granite, Cgranite = 0.79 J/gC A. 968) [The reaction X products is second order in X and has a rate constant of 0.035 M1s1] For the reaction H2(g) + I2(g) 2HI (g), the standard free energy is G^ > 0. D) only products are present with forward (A P) rate constant k and reverse (A P) rate constant k' is correct? C. 22.1 kJ mol-1 PART B: 4CuO (s) + CH4 (g) CO2 (g) + 4Cu (s) + 2H2O (g), 20) The equilibrium-constant expression for the reaction These MCQ Questions are selected supported by the newest exam pattern as announced by CBSE. 32) Catalysts have no effect on equilibrium situations. Initially, the vessel contains only X2 at a pressure of 1.75 atm. A) the quantities of reactants and . The reaction mixture will contain [A]=1.0M and [B]=0.1M. HC2H3O2 1.8105] H2 (g) + I2 (g) HI (g) A) 25 B) 2500 C) 7.07 D) 100 E) -50 C) 7.07 The concentration [A] was measured at two different times: at t1 = 19.4 s the concentration of A was [A]1 = 0.62 M and at time t2 = 60.8 s the result was [A]2 = 0.31 D) 2 SO3 (g) 2 SO2 (g) + O2 (g) Maldives, (+ Nigeria, (+ Here you will find NCERT MCQ Questions for Class 12 Chemistry with Answers PDF Free Download based on the important concepts and topics given in the textbook.This may assist you to understand and check your knowledge about the chapters. South Africa, (+ C. 11.70 A) N2O4 (g) 2NO2 (g) C. 62.5C D.2.08 10-2 J When a liquid evaporates in a closed container, molecules with relatively higher kinetic energy escape the liquid surface into the vapour phase and number of liquid molecules from the vapour phase strike the liquid surface and are retained in the liquid phase. 355) Write an equilibrium constant expression b. 28.4 kJ Georgia, (+ The reaction mixture will contain [A]=0.1M and [B]=1.0M. D. 1.2 Q: Calculate the [H3O+] of this rain. Understudies who wish to hone their insight into Chemistry. Let us consider that one mole of H2 and one mole of I2 are present initially in a vessel of volume V dm3. Part C: Calculate the change in the internal energy of the system, E. Explain why chlorine occurs as diatomic molecules in nature rather than individual atoms. How is vapor pressure related to temperature? 966) You'll get a detailed solution from a subject matter expert that helps you learn core concepts. 27) What is the vapor pressure of propane at 20.0 C? Thusly, students who have started their board test course of action can include the NCERT Chemistry MCQ Questions for Class 12 with Answers. A) products predominate \mathrm{Ag}^{+}(\mathrm{aq})+\mathrm{e}^{-} \rightleftharpoons \mathrm{Ag}(\mathrm{s}) & \text { voltage }=+0.80 \mathrm{~V} \\ E) decrease the partial pressure of CO, D) increase the value of the equilibrium constant, 34) Consider the following reaction at equilibrium. A 20.0kg20.0 \mathrm{~kg}20.0kg crate sits at rest at the bottom of a 15.0m15.0 \mathrm{~m}15.0m long ramp that is inclined at 34.034.0^{\circ}34.0 above the horizontal.