Question

An impure sample of calcium carbonate contains 80% pure calcium carbonate 25 gram of impure sample reacted with excess of hydrochloric acid .Calculate the volume of carbon dioxide at STP obtained from this sample

Answer 1

HEYA MATE,

HERE IS UR ANSWER.

Thanks for asking this question.

100g of impure calcium carbonate contain :

=80g pure calcium carbonate

25g of impure calcium carbonate sample contain =80100×25

=20g pure calcium carbonate

The desired equation is:

CaCO31mol100g+2HCl→CaCl2+CO222.4litreatNTP+H2O

100gpure CaCO3 liberate = 22.4 litre CO2

20g pure CaCO3 liberate =22.4100×20

=4.48 litre CO2 .

I HOPE IT HELPS U.

Answer 2

Answer:

Hope this helps you.....................