Question

Calculate the amount in grams of Na2CO3 needed in a reaction with HCl to produce 120g NaCl?

Answer 1

The balanced chemical reaction is written as :

Na2CO3 + 2HCl === 2NaCl + H2O + CO2

We are given the amount of NaCl to be produced from the reaction. This will be the starting point for the calculations. We do as follows:

120 g NaCl ( 1 mol / 58.44 g) ( 1 mol Na2CO3 / 2 mol NaCl)( 105.99 g / 1 mol ) = 1108.82 g Na2CO3 needed