A water insoluble substance 'X'on reacting with dilute sulphuric acid releases a colourless and odourless gas with brisk effervescence. On bubbling the gas through limewater, the limewater turns milky. But milkiness disappears when the gas is passed continuously. Identify the substance 'X' and write the chemical equations ofthe reactions involved.
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Carbon is the substance which releases carbon do oxide gas
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CaCO3 +H2SO4 => CaSO4 +H2O + CO2
the substance X is calcium carbonate... CaCO3
the substance X is calcium carbonate... CaCO3
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