The Following Pictures Represent Solutions of CaCO₃,which May Also Contain

question 31

Multiple Choice

The following pictures represent solutions of CaCO₃,which may also contain ions other than Ca²⁺ and CO₃^2- which are not shown.Gray spheres represent Ca²⁺ ions and unshaded spheres represent CO₃^2- ions.
-If solution (1) is a saturated solution of CaCO₃,which of solutions (1) -(4) represents the solution after a small amount of Ca(NO₃) ₂ is added and equilibrium is restored?

• A)(1)
• B)(2)
• C)(3)
• D)(4)

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