Question

What mass of h2 will react with 22.4 litre of o2 at ntp to produce 36 gram of water?​

Answer 1

One mole of H2 is 2.016 g/mol. One mole of O2 (22.4 L at STP) has a mass of 31.998 g/mol. Water has a molar mass of 18.015 g/mol. The balanced synthesis reaction for water is…2 H2 (g) + O2 (g) → 2 H2O (l)So…1 mol of O2 and 2 moles of H2 are needed to completely react to produce 2 moles H2O or 36 g of water (actually 36.030 g). The mass of H2 needed is 2 mol x 2.016 g/mol = 4.032 g H2