Calculating the Effect of a Common Ion on Solubility Consider a saturated soluti

Question

Calculating the Effect of a Common Ion on Solubility

Consider a saturated solution of the salt MX3, which M is a metal cation with a 3+ charge and X is an anion with a 1 charge, in water at 298 K. Which of the following will affect the Ksp of MX3 in water?

Consider a saturated solution of the salt , which  is a metal cation with a  charge and  is an anion with a  charge, in water at 298 . Which of the following will affect the  of  in water?

diluting the solution the addition of more X to the solution raising the temperature of the solution the addition of more M3+ to the solution more than one of the above factors

Explanation / Answer

This is simple

note that Ksp is always constant

i.e. it is the solubility product constant for a salt.

It relates the concentrations of both, cation and anion in solution

This only depends on Temperature!

Note that Ksp will not vary with respect to concetration

so choose

raising the temperature of the solution

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