Calcium is somewhat insoluble, so the solid commonly forms an equilibrium with its dissolved ions: CaSO₄(s)⇌ Ca²⁺(aq)+ SO₄^2-(aq)All of the following will affect the position of equilibrium, changing the numbers of dissolved ions in solution, except ________.

Question

Quizplus · Accepted Answer

Adding solid calcium sulfide would not change the numbers of dissolved ions in solution, as it is already in the solid form and will not dissociate further in solution. Adding Ca(NO3)2, Na2SO4, or water would affect the equilibrium by increasing or decreasing the numbers of dissolved ions in solution.

Calcium Is Somewhat Insoluble, So the Solid Commonly Forms an Equilibrium