Is the solubility of Zn(OH)2 increased, decreased, or unchanged on addition of e

Question

Is the solubility of Zn(OH)2 increased, decreased, or unchanged on addition of each of the following substances?

Part A

HCl

(Unknown)Write a balanced net ionic equation for A disolution reaction. Express your answer as a chemical equation. Identify all of the phases in your answer.

Part B

KOH

Express your answer as a chemical equation. Identify all of the phases in your answer.

Part C

NaCN

(Unknown) Write a balanced net ionic equation for E disolution reaction. Express your answer as a chemical equation. Identify all of the phases in your answer.

Explanation / Answer

Is the solubility of Zn(OH)2 increased, decreased, or unchanged on addition of each of the following substances?

Part A

HCl

Zn(OH)2 <=====> Zn2+ + 2OH-   ( product side lesser amount only)

This equilibrium will be affected by HCl

OH- is conusmed by HCl and it will shift towards right     and it leads to more dissolution.

Part B

KOH

it will suppress the dissolution of Zn(OH)2

Part C

NaCN   ( it will not affect the dissolution of NaCN)

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