1. Which of the ff. is NOT true for K? 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 correct а. 2. If Ka for the acid is 2.51 x 10 at 25°C, what is the Kb of the conjugate base? 3.98 x 1010 b. 3.98 x 10-10 а. c. 2.51 x 10S d. 2.51 x 10-19 е. 1.63 x 105 3. What is the equilibrium-constant expression of the dissociation of H3ASO4 to H3O* and AsO, ? [H30*) [AsO4³-] [H3ASO4] a. Ka = H3AS0,] [H30+]3 [AsO43-] d. Ka = [H3AS04] [H30+] [As043-] b. Ka = {H30*)3 [As043-} [H3ASO4][H20] е. Ka = [H30*)° [As043-] с. Ka = [H3ASO4] 4. Given the reaction: PCls(g) = PC13(g) + Cl2(g) (AH° = +87.8 kJ/mol). Which of the following changes will cause the concentration of Cl2 to decrease? Increase the temperature. Add more PCI5 a. b. Compress the gas into a smaller volume. Remove PCI3. Add a catalyst. с. d. e. 5. Which of the ff. is NOT true about the activity coefficient? It increases as the concentration of electrolyte solution decreases. b. Higher activity coefficients correlate to lower ionic strength. c. It is the same for ions with the same charge. d. It departs away from unity as the charge of the ion increases. e. All are correct a.
1. Which of the ff. is NOT true for K? 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 correct а. 2. If Ka for the acid is 2.51 x 10 at 25°C, what is the Kb of the conjugate base? 3.98 x 1010 b. 3.98 x 10-10 а. c. 2.51 x 10S d. 2.51 x 10-19 е. 1.63 x 105 3. What is the equilibrium-constant expression of the dissociation of H3ASO4 to H3O* and AsO, ? [H30*) [AsO4³-] [H3ASO4] a. Ka = H3AS0,] [H30+]3 [AsO43-] d. Ka = [H3AS04] [H30+] [As043-] b. Ka = {H30*)3 [As043-} [H3ASO4][H20] е. Ka = [H30*)° [As043-] с. Ka = [H3ASO4] 4. Given the reaction: PCls(g) = PC13(g) + Cl2(g) (AH° = +87.8 kJ/mol). Which of the following changes will cause the concentration of Cl2 to decrease? Increase the temperature. Add more PCI5 a. b. Compress the gas into a smaller volume. Remove PCI3. Add a catalyst. с. d. e. 5. Which of the ff. is NOT true about the activity coefficient? It increases as the concentration of electrolyte solution decreases. b. Higher activity coefficients correlate to lower ionic strength. c. It is the same for ions with the same charge. d. It departs away from unity as the charge of the ion increases. e. All are correct a.
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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Kindly answer 1-5. Thank you!
![1. Which of the ff. is NOT true for K?
It is dimensionless.
b. It is independent on temperature.
A reaction is spontaneous if K is greater than 1.
d. Concentration of species in the expression is in molarity (M).
а.
с.
e, All are correct
2. If Ka for the acid is 2.51 x 10 at 25°C, what is the Kb of the conjugate base?
а. 3.98 х 1010
b. 3.98 x 10-10
c. 2.51 x 10
d. 2.51 x 10-19
е.
1.63 x 105
3. What is the equilibrium-constant expression of the dissociation of H3ASO4 to H3O* and AsO43- ?
[H30*] [As043-1
Ка —
а.
[H3ASO4]
d.
Ka =
[H30+]3 [As043-1
[H3ASO4]
[H30+] [As043-]
b.
Ка —
{H30+]3 {As043
[H3ASO4][H20]
е.
Ka =
[H30*]³ [AsO4³-]
Ka =
с.
[H3ASO4]
4. Given the reaction: PCI5(g) PCI3(g) + Cl2(g) (AH° = +87.8 kJ/mol).
Which of the following changes will cause the concentration of Cl2 to decrease?
%3D
Increase the temperature.
b. Add more PCI5
a.
c. Compress the gas into a smaller volume.
d.
Remove PC33.
Add a catalyst.
с.
e.
5. Which of the ff. is NOT true about the activity coefficient?
It increases as the concentration of electrolyte solution decreases.
b. Higher activity coefficients correlate to lower ionic strength.
c. It is the same for ions with the same charge.
a.
d. It departs away from unity as the charge of the ion increases.
e. All are correct
C.](/v2/_next/image?url=https%3A%2F%2Fcontent.bartleby.com%2Fqna-images%2Fquestion%2Fc390119a-a7eb-4168-a060-f2750163e17b%2F13c3b844-422f-4f63-b59b-17b6b9de1b2b%2F2nkbp_processed.jpeg&w=3840&q=75)
Transcribed Image Text:1. Which of the ff. is NOT true for K?
It is dimensionless.
b. It is independent on temperature.
A reaction is spontaneous if K is greater than 1.
d. Concentration of species in the expression is in molarity (M).
а.
с.
e, All are correct
2. If Ka for the acid is 2.51 x 10 at 25°C, what is the Kb of the conjugate base?
а. 3.98 х 1010
b. 3.98 x 10-10
c. 2.51 x 10
d. 2.51 x 10-19
е.
1.63 x 105
3. What is the equilibrium-constant expression of the dissociation of H3ASO4 to H3O* and AsO43- ?
[H30*] [As043-1
Ка —
а.
[H3ASO4]
d.
Ka =
[H30+]3 [As043-1
[H3ASO4]
[H30+] [As043-]
b.
Ка —
{H30+]3 {As043
[H3ASO4][H20]
е.
Ka =
[H30*]³ [AsO4³-]
Ka =
с.
[H3ASO4]
4. Given the reaction: PCI5(g) PCI3(g) + Cl2(g) (AH° = +87.8 kJ/mol).
Which of the following changes will cause the concentration of Cl2 to decrease?
%3D
Increase the temperature.
b. Add more PCI5
a.
c. Compress the gas into a smaller volume.
d.
Remove PC33.
Add a catalyst.
с.
e.
5. Which of the ff. is NOT true about the activity coefficient?
It increases as the concentration of electrolyte solution decreases.
b. Higher activity coefficients correlate to lower ionic strength.
c. It is the same for ions with the same charge.
a.
d. It departs away from unity as the charge of the ion increases.
e. All are correct
C.
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