Consider a saturated aqueous solution of chromium (III) hydroxide, Cr(OH)3(s)?Cr

Question

Consider a saturated aqueous solution of chromium (III) hydroxide, Cr(OH)3(s)?Cr3+(aq)+3OH?(aq) How will each of the following changes affect an equilibrium mixture?

Part C Additional solid chromium (II) hydroxide is added to the saturated solution of chromium (Il) hydroxide. shift equilibrium toward the reactants shift equilibrium toward the products O no affect Submit My Answers Give Up Part D 5 mL of 12 M HCI (aq) is added to the saturated solution of chromium (Il) hydroxide. shift equilibrium toward the reactants shift equilibrium toward the products O no affect Submit My Answers Give Up

Explanation / Answer

C) we know that

solids does not affect the equilibrium

So

adding solid Cr(OH)3 has no affect on the equilibrium

D)

now

HCl is added

HCl--> H+ + Cl-

now

these H+ removes OH- from the equilibrium by the equation

H+ + OH- --> H20

so

by adding HCl , OH- are removed

now

according to Le Chatlier principle

the equilibrium will shift in a direction to counter the change

in this case

conc of OH- ions is decreasing ,

So to increase the conc of OH- ions,

the equilibrium will shift towards the products

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