Question

Calcium carbonate is relatively insoluble and the dissolution reaction is endothermic: CaCO3(s) Ca2+(aq) + CO32-(aq). Which change in reaction condition below will shift the equilibrium to the right?
A) add an acid to react with CO32- ion
B) add an anion with which Ca2+ is even less soluble than calcium carbonate
C) increase the temperature
D) All of the above will shift reaction to the right.

Answer

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