Question

A 1.00 liter solution contains 0.51 M hydrocyanic acid and 0.38 M sodium cyanide. If 40.0 mL of water are added to this system, indicate whether the following statements are true or false.

A. The number of moles of HNO2 will decrease.
B. The number of moles of NO2- will remain the same.
C. The equilibrium concentration of H3O+ will increase.
D. The pH will decrease.
E. The ratio of [HNO2] / [NO2-] will increase

Answer 1

A 1.00 liter solution contains 0.51 M hydrocyanic acid and 0.38 M sodium cyanide. Adding 40.0 mL of water to this system will result in the number of moles of HNO2 decreasing, the equilibrium concentration of H3O+ increasing, the pH decreasing, and the ratio of [HNO2] / [NO2-] increasing.

Step-by-step explanation:

A. The number of moles of HNO2 will decrease.

B. The number of moles of NO2- will remain the same.

C. The equilibrium concentration of H3O+ will increase.

D. The pH will decrease.

E. The ratio of [HNO2] / [NO2-] will increase.

Answer 2

c because youre adding so it’ll increace