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Preparation of Carbon Dioxide

When marble c...

Question

When marble chips are treated with $H C l$ , which of the following gas is liberated?

{C O}_{2}

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O_{2}

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{N O}_{2}

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Solution

The correct option is A ${C O}_{2}$
Marble chips are made up of calcium carbonate. When they are treated with $H C l$ , carbon dioxide gas is released along with the formation of water and calcium chloride. ${C a C O}_{3} + 2 H C l \to {C a C l}_{2} + H_{2} O + {C O}_{2}$ .

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