10. For the reaction: Cu2+ (aq) + 4NH3 (aq) [Cu(NH3)42+] (aq) Pale blue Royal bl

ID: 946532 • Letter: 1

Question

10. For the reaction: Cu2+ (aq) + 4NH3 (aq) [Cu(NH3)42+] (aq) Pale blue Royal blue

What color will the reaction be if HCl is added, which will react with the ammonia?

A. Pale blue

B. Royal blue

C. No color change

D. Sky Blue

11. In the endothermic reation: NH4Cl (s) NH4+ (aq) + Cl- (aq) Addition of HCl would cause.. A.

A precipitate to form

B. A precipitate to disappear

C. no affect

D. a color change

12. For the reaction:AgCl(s) Ag+(aq) + Cl- (aq) In which direction will the equilibrium shift when the volume of the reaction vessel is decreased?

A. Shift to the right

B. Shift to the left

C. No change occurs

D. Reaction is not in equilibrium

13. What is the Keq equilibrium expression for the following reaction: CoCl2 (aq) + 4Cl-(aq) [CoCl4]-2 (aq) + 6 H2O (l)

A. [H2O] [CoCl4-2]/ [Cl-] [CoCl2]

B. [H2O]6 [CoCl4-2]/ [Cl-]4 [CoCl2]

C. [CoCl4-2]/ [Cl-] [CoCl2]

D. [CoCl4-2]/ [Cl-]4 [CoCl2]

10. A

11. A

12. A

13. B

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