1. Which of the ff. is NOT true for K?a. It is dimensionless.b. It is independent on temperature.c. A reaction is spontaneous if K is greater than 1.d. Concentration of species in the expression is in molarity (M).e. All are correct2. If Ka for the acid is 2.51 x 10$ at 25°C, what is the Kb of the conjugate base?a. 3.98 x 100b. 3.98 x 10-10c. 2.51 x 10d. 2.51 x 10-19е. 1.63 х 10-s3. What is the equilibrium-constant expression of the dissociation of H3ASO4 to H3O* and AsO,- ?[H30*) [As043-][H3ASO4)а.Ka =(H3ASO,)[H30*]³ [AsO43=]d. Ka =(H3ASO,](H30*] [AsO43-}b. Ка3[H30*)³ [AsO4³¬][H3ASO,][H20]Ka =(H30*)° [As043-][H3ASO4)е.с.Ka =4. Given the reaction: PCls(g) = PCI3(g) + Cl2(g) (AH° = +87.8 kJ/mol).Which of the following changes will cause the concentration of Cl2 to decrease?a. Increase the temperature.b. Add more PCI5c. Compress the gas into a smaller volume.d.Remove PCI3.Add a catalyst.е.5. Which of the ff. is NOT true about the activity coefficient?a. It increases as the concentration of electrolyte solution decreases.b. Higher activity coefficients correlate to lower ionic strength.c. It is the same for ionsd. It departs away from unity as the charge of the ion increases.e. All are correctthe same char

1.) We would check all factors on which K ( equilibrium constant ) depends. 2) we would use…

1. Which of the ff. is NOT true for K? a. It is dimensionless. b. It is independent on temperature. c. A reaction is spontaneous if K is greater than I. d. Concentration of species in the expression is in molarity (M). e. All are correct 2. If Ka for the acid is 2.51 x 10s at 25°C, what is the Kb of the conjugate base? a. 3.98 x 1010 b. 3.98 x 1010 c. 2.51 x 10$ d. 2.51 x 10-19 e. 1.63 x 10s 3. What is the equilibrium-constant expression of the dissociation of H3ASO4 to H3O* and AsO ? [H30*] [As043-] [H3ASO,) а. Ка d. Ka (H3ASO, (H30*]³ [AsO43-] b. Ka = (H30+] [As043-} [H30*)³ [AsO4³¬] [H3ASO,][H20] Ka : (H30*)° [As043-] [H3ASO4) е. %3D с. Ka :

1. Which of the ff. is NOT true for K? a. It is dimensionless. b. It is independent on temperature. c. A reaction is spontaneous if K is greater than I. d. Concentration of species in the expression is in molarity (M). e. All are correct 2. If Ka for the acid is 2.51 x 10s at 25°C, what is the Kb of the conjugate base? a. 3.98 x 1010 b. 3.98 x 1010 c. 2.51 x 10$ d. 2.51 x 10-19 e. 1.63 x 10s 3. What is the equilibrium-constant expression of the dissociation of H3ASO4 to H3O* and AsO ? [H30] [As043-] [H3ASO,) а. Ка d. Ka (H3ASO, (H30]³ [AsO43-] b. Ka = (H30+] [As043-} [H30)³ [AsO4³¬] [H3ASO,][H20] Ka : (H30)° [As043-] [H3ASO4) е. %3D с. Ka :

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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