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16) For the reaction 6.25 x 103 mol.L's. The rate of formation of O₂ is N₂O(g)-2NO2(g)+1/202(g) a) 6.25x10-3 mol.L¹.s¹ b) 1.25x102 mol.L¹s c) 3.125x10³ mol.L¹.s¹ d) 4.57x103 mol.L¹s¹ the value of rate of disappearance of N₂Os is given as

16) For the reaction 6.25 x 103 mol.L's. The rate of formation of O₂ is N₂O(g)-2NO2(g)+1/202(g) a) 6.25x10-3 mol.L¹.s¹ b) 1.25x102 mol.L¹s c) 3.125x10³ mol.L¹.s¹ d) 4.57x103 mol.L¹s¹ the value of rate of disappearance of N₂Os is given as

Chemistry
Chemistry
10th Edition
ISBN:9781305957404
Author:Steven S. Zumdahl, Susan A. Zumdahl, Donald J. DeCoste
Publisher:Steven S. Zumdahl, Susan A. Zumdahl, Donald J. DeCoste
Chapter1: Chemical Foundations
Section: Chapter Questions
Problem 1RQ: Define and explain the differences between the following terms. a. law and theory b. theory and...
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10) is a thermodynamic state quantity that is a measure of the randomness or disorder of the molecules of the system? a) Entropy b) Enthalpy c) Free energy d) Internal energy There are 12 molecules in two boxes that are connected. shown below. Answer the following two questions? 11) How many ways can you have 6 molecules in the left box and 6 in the right box? 201 c) 21485 ways d) 924 ways a) 495 ways b) 2514 ways 12) What is the entropy of the arrangement in Q11? KB= 1.38×10-23 J/K, a) 1.08×10-22 J/K b) 9.42×10-23 J/K c) 8.56×10-23 J/K d) 1.56x10-23 J/K 13) Determine the signs of (AH, AS, AG) for the reaction H₂O(s) → H₂O(1) at high temperature? a) (+, +,-) b) (+, +, +) d) (-, +, +) c) (+,-, +) 14) For the reaction BaF2(s) = Ba2 (aq) + 2F (aq), AG= 35000 at 25 °C, calculate KSP? calculate AG for the reaction? a) Ksp 2.62×10-6 b) Ksp 7.66x10€ c) KSP=7.33x10-7 d) Ksp 8.35x10-7 15) For the reaction R-P, the concentration of a reactant changes from 0.0300 M to 0.0282 M in 25 minutes. Calculate the average rate of reaction in seconds. a) 8.35x108 M.S-¹ b) 6.67x10-6 M.S-¹ c) 1.20x10 M.s-¹ d) 4.57×10 M.s¹ 16) For the reaction N₂Os(g)-2NO2(g)+1/2O2(g) the value of rate of disappearance of N₂Os is given as 6.25 x 103 mol.L's. The rate of formation of O₂ is d) 4.57x103 mol.L¹s¹ a) 6.25x10-3 mol.L-¹.s¹ b) 1.25x102 mol.L¹.s¹ c) 3.125x103 mol.L-¹.s¹ 17) The initial-rate data in the table below were obtained for the reaction A+ B rate law for the reaction? a) Rate=k[A][B] b) Rate=k[A][B]² a) exp L 2 3 [4], Finital [A] inital (B) (mol L (mol L 0.10 0.20 0.20 9925 c) Rate=k[A][B]³ d) Rate-k[A] [B]² 18) For the reaction for which rate law is rate= k[A]', a plot of which of the following is a straight line? versus time b) [4], versus time c) In- versus time d) In[4], versus time 19) A certain reaction having the following concentration-time relation: the following represent the correct t1/2 relation of the reaction? 1 a) ½ 2k 0.10 0.10 0.50 [4]. c) 1½-10k = 2C. What is the experimental initial rate of formation of [C] (mol L sec ) 2.5 x 104 5.0 x 10- 1.25 x 10-² 3[A],-2[A], 4 -5kt which relation of Hope d) 1/2=10k( b) 1% = 2k [4] 20) The reaction AB is first order reaction with t1/2 = 50 s, calculate the rate constant (k) and the time required to react 65% of the substance A? a) k-0.01386 s¹ and t-31.08 s b) k= 0.0866 s¹ and t= 75.74 s d) k-0.01386 s¹ and t= 75.74 s c) k=0.866 s¹ and t- 31.08 s
Transcribed Image Text:10) is a thermodynamic state quantity that is a measure of the randomness or disorder of the molecules of the system? a) Entropy b) Enthalpy c) Free energy d) Internal energy There are 12 molecules in two boxes that are connected. shown below. Answer the following two questions? 11) How many ways can you have 6 molecules in the left box and 6 in the right box? 201 c) 21485 ways d) 924 ways a) 495 ways b) 2514 ways 12) What is the entropy of the arrangement in Q11? KB= 1.38×10-23 J/K, a) 1.08×10-22 J/K b) 9.42×10-23 J/K c) 8.56×10-23 J/K d) 1.56x10-23 J/K 13) Determine the signs of (AH, AS, AG) for the reaction H₂O(s) → H₂O(1) at high temperature? a) (+, +,-) b) (+, +, +) d) (-, +, +) c) (+,-, +) 14) For the reaction BaF2(s) = Ba2 (aq) + 2F (aq), AG= 35000 at 25 °C, calculate KSP? calculate AG for the reaction? a) Ksp 2.62×10-6 b) Ksp 7.66x10€ c) KSP=7.33x10-7 d) Ksp 8.35x10-7 15) For the reaction R-P, the concentration of a reactant changes from 0.0300 M to 0.0282 M in 25 minutes. Calculate the average rate of reaction in seconds. a) 8.35x108 M.S-¹ b) 6.67x10-6 M.S-¹ c) 1.20x10 M.s-¹ d) 4.57×10 M.s¹ 16) For the reaction N₂Os(g)-2NO2(g)+1/2O2(g) the value of rate of disappearance of N₂Os is given as 6.25 x 103 mol.L's. The rate of formation of O₂ is d) 4.57x103 mol.L¹s¹ a) 6.25x10-3 mol.L-¹.s¹ b) 1.25x102 mol.L¹.s¹ c) 3.125x103 mol.L-¹.s¹ 17) The initial-rate data in the table below were obtained for the reaction A+ B rate law for the reaction? a) Rate=k[A][B] b) Rate=k[A][B]² a) exp L 2 3 [4], Finital [A] inital (B) (mol L (mol L 0.10 0.20 0.20 9925 c) Rate=k[A][B]³ d) Rate-k[A] [B]² 18) For the reaction for which rate law is rate= k[A]', a plot of which of the following is a straight line? versus time b) [4], versus time c) In- versus time d) In[4], versus time 19) A certain reaction having the following concentration-time relation: the following represent the correct t1/2 relation of the reaction? 1 a) ½ 2k 0.10 0.10 0.50 [4]. c) 1½-10k = 2C. What is the experimental initial rate of formation of [C] (mol L sec ) 2.5 x 104 5.0 x 10- 1.25 x 10-² 3[A],-2[A], 4 -5kt which relation of Hope d) 1/2=10k( b) 1% = 2k [4] 20) The reaction AB is first order reaction with t1/2 = 50 s, calculate the rate constant (k) and the time required to react 65% of the substance A? a) k-0.01386 s¹ and t-31.08 s b) k= 0.0866 s¹ and t= 75.74 s d) k-0.01386 s¹ and t= 75.74 s c) k=0.866 s¹ and t- 31.08 s
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