What happens when aqueous solutions of calcium chloride and of sodium carbonate are mixed?

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What happens when aqueous solutions of calcium chloride and of sodium carbonate are mixed?

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Answer 1 · 2015-10-19T22:43:11

A double replacement reaction takes place.

Explanation:

Calcium chloride, ${CaCl}_{2}$ $"CaCl"_2$ , a soluble ionic compound, and sodium carbonate, ${Na}_{2} {CO}_{3}$ $"Na"_2"CO"_3$ , also a soluble ionic compound, will react to form calcium carbonate, ${CaCO}_{3}$ $"CaCO"_3$ , an insoluble solid that precipitates out of solution, and sodium chloride, another soluble ionic compound.

The balanced chemical equation for this double replacement reaction looks like this

${CaCl}_{2(aq]} + {Na}_{2} {CO}_{3(aq]} \to {CaCO}_{3(s]} ⏐ ↓ + 2 {NaCl}_{(aq]}$ $"CaCl"_text(2(aq]) + "Na"_2"CO"_text(3(aq]) -> "CaCO"_text(3(s]) darr + 2"NaCl"_text((aq])$

Once you mix the two aqueous solutions, a white insoluble solid, calcium carbonate, will precipitate out of solution.

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The net ionic equation for this reaction looks like this

${Ca}_{(aq]}^{2 +} + {CO}_{3(aq]}^{2 -} \to {CaCO}_{3(s]} ⏐ ⏐ ↓$ $"Ca"_text((aq])^(2+) + "CO"_text(3(aq])^(2-) -> "CaCO"_text(3(s]) darr$

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What happens when aqueous solutions of calcium chloride and of sodium carbonate are mixed?

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