Problem: Determine whether or not CuS will be more soluble in acidic solution than in pure water.

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We’re being asked to determine whether or not CuS is more soluble in an acidic solution or in water. 


Solubility is defined as the maximum amount of solute that will dissolve in a solvent at equilibrium.   


Recall that the solubility of a salt in an acidic medium depends on the anion present in the compound: 


  • If the anion is a basic or the conjugate acid of the anion is weak acid  soluble in acidic medium
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Problem Details

Determine whether or not CuS will be more soluble in acidic solution than in pure water.

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