Question

how many moles of sodium are needed to react with sulfic acid to produce 3.75 moles of sodium according to the following unbalanced reaction

Na+ H2(SO4)> Na2 (SO4)+H2

Answer 1

2Na+ H2(SO4) ---> Na2(SO4)+H2

The mole ratio of Na to Na₂SO₄ is 2 : 1.

So, moles of Na₂SO₄ is 3.75 * 2 = 7.5 mol