00 liter solution contains 0.42 M ammonia and 0.55 M ammonium chloride . If 0.140 moles of barium hydroxide are added to this system, indicate...

1. A 1.00 liter solution contains 0.42 M ammonia and 0.55 M ammonium chloride.

If 0.140 moles of barium hydroxide are added to this system, indicate whether the following statements are true or false.

(Assume that the volume does not change upon the addition of barium hydroxide.)

_______

True

False

 A. The number of moles of NH3 will increase.

_______

True

False

 B. The number of moles of NH4+ will decrease.

_______

True

False

 C. The equilibrium concentration of H3O+ will decrease.

_______

True

False

 D. The pH will decrease.

_______

True

False

 E. The ratio of [NH3] / [NH4+] will remain the same.

2.

0.40 hydrocyanic acid 0.31 sodium cyanide 

0.15 perchloric acid 

(Assume that the volume does not change upon the addition of perchloric acid.)

_______

True

False

A. The number of moles of HCN will decrease.

_______

True

False

B. The number of moles of CN- will remain the same.

_______

True

False

C. The equilibrium concentration of H3O+ will decrease.

_______

True

False

D. The pH will remain the same.

_______

True

False

E. The ratio of [HCN] / [CN-] will remain the same.