The solubility of calcium carbonate decreases as temperature increases.

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Multiple Choice

The solubility of calcium carbonate decreases as temperature increases.

Explanation:
Calcium carbonate behaves differently from many salts: its solubility in water decreases as temperature rises. This means that when you heat the solution, the equilibrium shifts toward the solid CaCO3, so fewer Ca2+ and CO3^2- ions stay dissolved. In practical terms, warmer water holds less dissolved calcium carbonate and tends to precipitate it out. This is why this compound is a notable exception to the general rule that solubility increases with temperature.

Calcium carbonate behaves differently from many salts: its solubility in water decreases as temperature rises. This means that when you heat the solution, the equilibrium shifts toward the solid CaCO3, so fewer Ca2+ and CO3^2- ions stay dissolved. In practical terms, warmer water holds less dissolved calcium carbonate and tends to precipitate it out. This is why this compound is a notable exception to the general rule that solubility increases with temperature.

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