Bubbling which gas through limewater produces a milky suspension due to calcium carbonate formation?

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Multiple Choice

Bubbling which gas through limewater produces a milky suspension due to calcium carbonate formation?

Explanation:
When carbon dioxide passes through limewater, the solution clouds up because a solid calcium carbonate forms. Limewater is a solution of calcium hydroxide; carbon dioxide dissolves to form carbonic acid, which reacts with Ca(OH)2 to produce CaCO3, an insoluble solid that scatters light and looks milky. The reaction is CO2 + Ca(OH)2 → CaCO3(s) + H2O. This test is a classic way to identify carbon dioxide, since the other gases don’t produce this calcium carbonate precipitate in limewater, so the milky Cloud is specific to CO2.

When carbon dioxide passes through limewater, the solution clouds up because a solid calcium carbonate forms. Limewater is a solution of calcium hydroxide; carbon dioxide dissolves to form carbonic acid, which reacts with Ca(OH)2 to produce CaCO3, an insoluble solid that scatters light and looks milky. The reaction is CO2 + Ca(OH)2 → CaCO3(s) + H2O. This test is a classic way to identify carbon dioxide, since the other gases don’t produce this calcium carbonate precipitate in limewater, so the milky Cloud is specific to CO2.

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