Question

The volume of CO, at STP obtained by heating
1 gm of CaCO, will be
(AIPMT-91]
(1) 1 litre
(2) 22.4 litres
(3) 0.224 litre
(4) 11.2 litre
52​

Answer 1

Answer:

(3) 0.244 litre

Explanation:

1 gram of CaCO3 indicates 0.01 moles of it.

                 CaCO3  ------------------> CaO  +  CO2

1mole of CaCO3 gives 1mole of CO2 on heating.

so, 0.01 moles of CaCO3 gives 0.01moles of CO2.

1mole of CO2 means 22.4litres of it,

thus 0.01 moles of CO2 indicates 0.224litres = 224millilitres

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