Give reason dil sulphric acid id not used in preperation of carbon dioxide
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The formation of CO2 occurs when any acid, incl. H2SO4, reacts with a carbonate or hydrogen carbonate salt. That is 2H+ + CO32- -> H2O + CO2. In other words any acid can be used to form CO2 from carbonates or hydrogen carbonates.
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Explanation:
Because sulphuric acid form an insoluble layer of sulphate with stop further reaction from taking place.
Dilute sulphuric acid reacts with calcium carbonate. But it is not used because the calcium sulphate which is formed during the reaction is insoluble in water. It covers the marble chips and stops the reaction.
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