Question

For the following chemical reaction, how many moles of hydrogen (H2) will be produced from 2.0 mol of aluminum (Al)? 2Al+3H2SO2⟶3H2+Al2(SO2)3

Answer 1

Aluminum to hydrogen gas ratio is 2 : 3 by looking at the coefficients of aluminum on the reactant side and hydrogen gas on the product side.

So from 2.0 mol of Al, 3.0 mol of H2 would form.