Question

What is the theoretical volume of carbon dioxide that can be obtained, at room temperature

and pressure, when 1.2 g of Na2CO3(s) reacts with 50cm3

of 1.0 M HNO3?

Answer 1

The balanced equation of the reaction is,

$Na2CO3+2HNO3\to2NaNO3+CO2+H2O$

Mole ratio is $1:2\to2:1:1$

No of moles of $Na2CO3=\dfrac {1.2g}{105.9g/mol}$

$=0.01133mol$

$0.01133mol$ of $Na2CO3$ produced $0.01133mol$ of $CO2$ since the mole ratio is 1:1

At room temperature $1mol$ $of CO2=24dm^3$

Therefore,

If $1mol=24dm^3$

$0.01133mol=??$

$=0.27dm^3$

Theoretical volume of carbon dioxide produced is $0.27dm^3$