If 20.0 grams of hydrochloric acid (HCl) react with sodium sulfate (Na2SO4 ), how many grams of sulfuric acid (H2SO4 ) will be produced?

Answer 1

Write the balanced equation:

2HCl + Na₂SO₄ ==> 2NaCl + H₂SO₄

Use dimensional analysis and stoichiometry:

20.0 g HCl x 1 mol HCl/36.5 g x 1 mol H₂SO₄ / 2 mol HCl x 98.1 g H₂SO₄/mol = 26.9 g H₂SO₄