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What happens when exhaling is made through a tube passing in lime water? What will happen if continued

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What happens when exhaling is made through a tube passing in lime water? What will happen if continued exhaling is made through it? If the solution thus obtained is heated, what do we observe? Explain giving chemical reactions.

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Lime water turns milky due to formation of CaCO3

Ca(OH)2 + CO2 → CaCO3 + H2O

Milkiness will disappear if continuously exhaling i.e., CO2 is passed due to formation of calcium bicarbonate.

CaCO3 + CO2 + H2O → Ca(HCO3)2

Milkiness will reappear if heating is done due to formation. CaCO3

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