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# Equilibrium Constant Expressions for Solubility Equilibria

CHEM-HXNKYD

What is the equilibrium constant expression for the ${ K }_{ sp }$ of $Co_{ 3 }(As{ O }_{ 4 })_{ 2 }$?

A

${ K }_{ sp }=\cfrac { \left[ { Co }^{ 2+ } \right] ^{ 3 } }{ \left[ As{ O }_{ 4 }^{ 3- } \right] ^{ 2 } }$

B

${ K }_{ sp }=\cfrac { 1 }{ \left[ { Co }^{ 2+ } \right] ^{ 3 }\left[ As{ O }_{ 4 }^{ 3- } \right] ^{ 2 } }$

C

${ K }_{ sp }=\left[ { Co }^{ 2+ } \right] ^{ 3 }\left[ As{ O }_{ 4 }^{ 3- } \right] ^{ 2 }$

D

${ K }_{ sp }=\cfrac { \left[ { Co }^{ 2+ } \right] ^{ 3 }\left[ As{ O }_{ 4 }^{ 3- } \right] ^{ 2 } }{ \left[ Co_{ 3 }As{ O }_{ 4 } \right] }$