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# An Electrochemical Cell and Evaluating Solubility Product Constant

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Describe an electrochemical cell that would determine the solubility product constant at equilibrium for Chronium (III) hydroxide, then calculate the solubility product constant.

Balance these reduction potential half equations first:

Ox. Cr+3(aq) + 3e => Cr(s) -0.74v
Red. Cr(OH)3(s) + 3e => Cr(s) + 3OH-1(aq) -1.30v

https://brainmass.com/chemistry/electrochemical-potentials/electrochemical-cell-evaluating-solubility-product-constant-40729

#### Solution Preview

Ok first of all the reaction you write with Ox next to it is actually a reduction as written but that is fixed easily as :
Ox. Cr+3(aq) + 3e < = Cr(s) ...

#### Solution Summary

This solution includes formula, calculations and explanation which the student can use to easily find K.

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