Question

What mass of sodium carbonate is required for complete reaction with 8.35 g of nitric acid to produce sodium nitrate, carbon dioxide, and water?

Answer 1

Mass of sodium carbonate = 7.022 g

Further explanation

Reaction

Na₂CO₃ + 2HNO₃ ⇒ 2NaNO₃ + H₂O + CO₂

mol of HNO₃ (MW=63,01 g/mol):

$\tt mol=\dfrac{8.35}{63.01}=0.1325$

mol Na₂CO₃

$\tt \dfrac{1}{2}\times 0.1325=0.06625$

mass Na₂CO₃(MW = 105,9888 g/mol) :

$\tt 0.06625\times 105,9888 g/mol=7.022~g$