Question

10g of calcium carbonate was produced when carbon dioxide was added to lime water

(calcium hydroxide in solution). What volume of carbon dioxide at STP was needed?
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Answer 1

Explanation:

.no. of moles = mass/molar mass

=10/100

=0.1

CaCO3=CaO+CO2

so for CO2

volume = no. of moles×22.4

=0.1×22.4

=2.24 L

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