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

question 50

Multiple Choice

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 ________.

• A)adding Ca(NO₃)₂
• B)adding Na₂SO₄
• C)adding CaSO₄(s)
• D)adding water

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