Question

The reaction between 15 g of marble and nitric acid is given by the following equation:

\[\ce{CaCO3 + 2HNO3 -> Ca(NO3)2 + H2O + CO2}\]

Calculate the volume of carbon dioxide evolved at S.T.P.

Answer 1

1 V of CaCO₃ produces 1 V of CO₂

100 g of CaCO₃ has volume = 22.4 litres

So, 15 g will have volume = `(22.4 xx 15)/100` = 3.36 litres