Question

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

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

Part A

HCl

-Increased(Known)

(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

-Increased.(Known)
(Unknown)Write a balanced net ionic equation for C disolution reaction.

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


Part C

NaCN

-Increased. (Known)

(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.

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Homework Answers

Answer #1

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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