in chemical equation h2+i2=2hi the equilibrium constant kp depends on
Which statement is true of an endothermic reaction? 380) Georgia, (+ Belgium, (+ Yes, our website is the one-stop search for all CBSE Board Examination related sources like questions papers, syllabus, exam pattern, sample papers, and Multiple choice questions papers. B. Intramolecular forces Q: What is the mass of the silver block? Mexico, (+ Br2 (g) + Cl2 (g) 2BrCl (g) Netherlands, (+ A closed vessel at 400 K is charged with 1.00 atm of Br2 (g), 1.00 atm of Cl2 (g), and 2.00 atm of BrCl (g). Ghana, (+ Germany, (+ 2SO2 (g) + O2 (g) 2SO3 (g) 27) B) [CO2] / [H+][HCO3-] You'll get a detailed solution from a subject matter expert that helps you learn core concepts. A. Asked by sumandeesinghrana | 12 Oct, 2010, 03:00: PM Expert Answer Dear Student For the reaction H 2 + I 2 --------> 2HI 46) 9) The equilibrium expression for Kp for the reaction below is ________. PPT PowerPoint Presentation For the reaction H2(g) + I2(g) 2HI (g), the standard free energy is G^ > 0. How is vapor pressure related to temperature? 263) . If you have any query regarding CBSE MCQs, drop a comment below and we will get back to you at the earliest. 973) 91) 971) [An aqueous solution contains 32% HCl by mass] 351) From Midterm 3: Welcome to Sarthaks eConnect: A unique platform where students can interact with teachers/experts/students to get solutions to their queries. A(g) + 2B(g) AB2(g) Kc = 59 26) Which of the following statements is true? Consider the following reactions,(a) H2(g) + I2(g) 2HI(g)(b) CaCO2(s) CaO(s) + CO2(g)(c) S(s) + 3F2(g) SF6(g), The value of Kc for the reaction 2HI (g) H2 (g) + I2 (g) is 1 10^4 At a given time, the composition of reaction mixture is. (a) total pressure(b) catalyst used(c) amount of H2 and I2(d) temperature, (a) 2 10-4(b) 4 10-2(c) 2 10-2(d) 1 10-2, (a) bar min-1, bar2 min-1(b) bar min-1, bar1/2 min-1(c) bar1/2 min-1, bar2 min-1(d) bar min-1, bar1/2 min-1, (a) 9 times(b) 4 times(c) 16 times(d) 8 times, (a) NH4NO2 N2 + 2H2O(b) NO + O3 NO2 + O2(c) 2NO + Br2 2NOBr(d) CH3CHO CH4 + CO, (a) mol L-1 s-1(b) s-1(c) mol-2 L s-1(d)mol L-1, (a) (i)2, (ii) 1(b) (i)2,(ii) 2(c) (i) 1, (ii) 1(d) (i) 1, (ii) 2, (a) temperature of the reaction(b) extent of the reaction(c) initial concentration of the reactants(d) the time of completion of reaction, (a) Rate = k [O] [O3](b) Rate = k [O3] [O2]-1(c) Rate = k [O3](d) Rate = k [O2] [O], (a) zero order reaction(b) first order reaction(c) second order reaction(d) third order reaction, (a) order of a reaction(b) molecuiarity of a reaction(c) fast step of the mechanism of a reaction(d) half-life of the reaction, (a) the order and molecuiarity of the slowest step are equal to one(b) molecuiarity of the reaction can be zero, one or two(c) molecuiarity of the reaction can be determined only experimentally(d) more than one reacting species are involved in one step, (a) the order and molecuiarity of the slowest step are equal to one, (a) the rate of fastest intermediatestep(b) the sum total of the rates of all intermediate steps(c) the average of the rates of all the intermediate steps(d) the rate of slowest intermediate step, (d) the rate of slowest intermediate step, (a) temperature(b) mechanism of reaction as well as relative concentration of reactants(c) molecularity(d) pressure, (b) mechanism of reaction as well as relative concentration of reactants, (a) inversely proportional to the concentration units(b) independent of concentration units(c) directly proportional to concentration units(d) inversely proportional to the square of concentration units, (a) 2 10-2 s-1(b) 4 10-4 s-1(c) 20 s-1(d) 2 10-4 s-1, (a) EaR(b) Ea2.303R(c) 2.303Ea.R(d) Ea2.303, (a) mol L-1s-1(b) s-1(c) L mol-1s-1(d) L2mol-2s-1, (a) triple(b) increase by a factor of 4(c) double(d) remain unchanged. Bangladesh, (+ In chemical equation H2(g) + I2(g) 2HI(g), the equilibrium Kp depends on. The equilibrium constant K will increase above 2.010-3. Assuming no loss of heat to the surroundings, what is the final temperature of the mixture? From Midterm 3: South Korea, (+ H2 (g) + I2 (g) HI (g) A) 25 B) 2500 C) 7.07 D) 100 E) -50 C) 7.07 ..Keq = 6.2 x 10^2 -25.5 kJ An analyte containing 0.12 L of a 0.025 M solution of a strong acid is titrated with a 0.220 M solution of a strong base. CBSE MCQs lay a stronger foundation of concepts in students that can be useful for them in their later stages to prepare for any competitive exams. 7) What is the primary source of water stored in an aquifer? So Kp = (PH2) x (PI2) / PHI^2 P = partial pressure A constant horizontal force of 290N290 \mathrm{~N}290N is applied to the crate to push it up the ramp. 17.9 A homogeneous equilibrium reaction exists when all the components of the reaction are in the same phase (i.e., gas, liquid, solid, aqueous). D. SiF4 The enthalpy of a reaction can be calculated from the heats of formation of the substances involved in the reaction: * Your assessment is very important for improving the workof artificial intelligence, which forms the content of this project Ukraine, (+ A. Poland, (+ 960) A) 2HI (g) H2 (g) + I2 (g) What state transition or transistions occur in carbon dioxide if you begin with a sample of carbon dioxide at 60.0 C at 50.0 atm and warm the sample to 10.0 C and 50.0 atm? If you find. A) products predominate . Which change will shift the equilibrium to the left? Part A: What is the value of E for the combustion of the fuel? [The vapor above an aqueous solution contains 17.9 mg water per liter at 25 C] O2(g)+2H2O(l)+4Ag(s) 4OH(aq)+4Ag+(aq). 971) Provide your answer in units of volts (V). Note: Names of real elements have been changed to 'Xx' and 'Xa'. @X UBBIS Digitized by the Internet Archive in 2019 with funding from University of Alberta Libraries https ://arch i ve . Maldives, (+ 2.34 10-7 Egypt, (+ PPT Chemical Equilibrium - Berkeley City College Write an equilibrium constant expression b. In chemical equation H2 (g) I2 (g) 2HI (g) the equilibrium constant Consider a cell that is built using the following two half-reactions, Bangladesh, (+ B. h) A ask is sealed at 600 K 1with partial pressures of Hg = 2.50 atm and I g = 1.27.0 am. 992) A. Give the direction of the reaction, if K >> 1. C. 50.0 g Al, CAl = 0.903 J/gC D. ion-dipole C) The reaction is at equilibrium when Q < Keq. B. 7) A. Hungary, (+ 2 HI(g) H2(g) + I2(g) Kc= 0.016 @ 800 K Let "x" represent the change in concentration of the hydrogen gas. D. 1, The equilibrium constant is given for two of the reactions below. E) -50, 14) Given the following reaction at equilibrium, if Kc = 1.90 1019 at 25.0 C, Kp = ________. and MCQ Questions for Class 12 Chemistry Chapter 4 Chemical - CBSE MCQ Another example of a chemical equation that can be used to explain is given below: Equation: 2 S O 2 ( g) + O 2 ( g) 2 S O 3 ( g) Equilibrium Constant: K C = [ S O 3] 2 [ S O 2] 2 [ O 2] Moreover, in terms of finding equilibrium constant for gases, partial pressure is taken into account. Tap on the individual Chapter connection of twelfth Standard Chemistry you need to practice and profit the comparing points MCQ Quiz Questions. E. -117 kJ. 25) At 400 K, the equilibrium constant for the reaction Le Chtelier's principle predicts that the moles of in the reaction container will increase with ________. D) at low temperature and high pressure [Butane (C4H10) has a heat of vaporization of 22.44 kJ/mol and a normal boiling point of -0.4 C. PDF Equilibrium- HW - NJCTL Terms T&C. B. 6) The equilibrium-constant expression depends on the ________ of the reaction. Two liquids, labeled A and B, form an ideal mixture with total vapor pressure P = 324.4 torr at a certain composition. What is the vapor pressure of propane at 20.0 C? Hydrogen iodide can decompose into hydrogen and iodine gases. C. dipole-dipole 1) B.54.4 J 224) E. 0.169 M, From Midterm Exam 2: The isomerization of methylisonitrile to acetonitrile A. Georgia, (+ 2 CH3OH(l) + 3 O2(g) 2 CO2(g) + 4 H2O(g) NO(g)+12Br2(g)NOBr(g)Kp=5.3 C. N(g) D. 4.60. E. In equilibrium, the ratio [P] / [A] is equal to k / k'. 15.5: Calculating Equilibrium Constants - Chemistry LibreTexts Saudi Arabia, (+ User Agreement,Privacy Policy D -511. 48) D. 0.087 Chemistry MCQ For Class 12 Chapter astute with Answers PDF Download. Key points. Provide an explanation. 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? 971) C. 0.322 M Business, Finance, Economics, Accounting, Operations Management, Computer Science, Electrical Engineering, Mechanical Engineering, Civil Engineering, Chemical . Use the following reactions and given H values. Mauritius, (+ 2HI leftharpoons H2 + I2 . Kp is - Tardigrade B) increase the partial pressure of CO2 (g) mmmmmmmH2 + mmlI2 mll2HI I/molL-1:ml1.000mm1.000mml1.000 C/molL-1:mm-xmmmll-xmmml+2x E/molL-1:m1.000-xm1.000-xm1.000+2x B. is Kp = 7.0. Egypt, (+ 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. B) [(NH4)2Se] / [NH3]2[H2Se] 82) C) [H+][HCO3-] / [CO2][H2O] Consider an acetate buffer that is a mixture of 0.20 M acetic acid and 0.20 M sodium acetate. Q.1 In chemical equation H2 (g) + I2 (g) 2HI (g) the equilibrium constant Kp depends on (a) total pressure (b) catalyst used (c) amount of H2 and I2 (d) temperature Show Answer (b) catalyst used Q.2 If the rate of a reaction is expressed by, rate = A [A] [B], the order of reaction will be (a) 2 (b) 3 (c) 1 (d) 0 Show Answer (b) 3 We hope the given CBSE MCQs for Class 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, and 12th all subjects will help you. 8) The equilibrium expression for Kp for the reaction below is ________. In a particular experiment, the partial pressures of H 2 and I 2 28.4 kJ 93) B) reactants predominate D. 1-butanol C. 1.28 Zimbabwe, (+ What is the stoichiometric coefficient of Xx(s) in the balanced reaction equation for that cell ? Consider the following reaction: H2 (g) + I2 (s) ---> 2HI (g) TriangleH 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. 880) is Keq = 2.80 102 at 999 K. At equilibrium, ________. A. Calculate K and Kp for this reaction. 2 HD(g) H2(g) + D2(g) Kc = 0.28 D. 456 kJ The molar mass of sugar is 342.3 g/mol. D. capillary action Q: What is the [H3O+] in pure water at body temperature? B. B. An aqueous solution contains 0.10M H 2S and 0.20M H Cl . (Assume ideal behavior.). E) [F-] / [HF], 19) The expression for for the reaction below is ________. By clicking Agree & join, you agree to the Study24x7 52) 2A(g) + B(g) A2B(g) Kc = ? This equilibrium is an exothermic one. New Zealand, (+ D. 1.2 H 2(g) +I 2(g) 2H I (g) 960) E. H3O+. [Calculate the freezing point and boiling point in each solution, assuming complete dissociation of the solute] 44) The heat of vaporization of the alcohol at 25 C is 45.4 kJ/mol, the specific heat of aluminum is 0.903 J/gC. D. Xd + H+ Xd2+ + H2 + Pt If 35.8 mg of the compound is dissolved in enough water to make 175 mL of solution at 25C, what is the osmotic pressure of the resulting solution? By this, you can dominate CBSE Class 12 Chemistry and play with words without any problem. A. Kc depends on how the chemical equation is written, but not on how the reaction is carried out. The reaction mixture will contain [A]=0.1M and [B]=1.0M. Use Q to determine which of the statements below is true. 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