A warehouse forklift truck is powered by a hydrogen-oxygen fuel cell. The fuel cell uses 0.50 g of hydrogen each minute.

$2H2(g)+O2(g)→2H2O(l)2\mathrm{H_{2}(g)} + \mathrm{O_{2}(g)} \rightarrow 2\mathrm{H_{2}O(l)}$

Relative atomic masses: H = 1, O = 16. The volume of one mole of any gas at room temperature and pressure is 24 $dm3\mathrm{dm^{3}}$ .

Calculate the number of moles of hydrogen used each minute.

Calculate the volume of oxygen, at room temperature and pressure, used each minute.

Calculate the mass of water produced each minute.

The fuel cell takes its oxygen from the air. Air contains 20% oxygen by volume. Calculate the volume of air needed each minute.

Give one reason why a fuel cell forklift truck is more suitable for use inside a warehouse than a diesel forklift truck.

A warehouse forklift truck is powered by a hydrogen-oxygen fuel cell. The fuel cell uses 0.50 g of hydrogen each minute.

$2H2(g)+O2(g)→2H2O(l)2\mathrm{H_{2}(g)} + \mathrm{O_{2}(g)} \rightarrow 2\mathrm{H_{2}O(l)}$

Relative atomic masses: H = 1, O = 16. The volume of one mole of any gas at room temperature and pressure is 24 $dm3\mathrm{dm^{3}}$ .

Calculate the number of moles of hydrogen used each minute.

Calculate the volume of oxygen, at room temperature and pressure, used each minute.

Calculate the mass of water produced each minute.

The fuel cell takes its oxygen from the air. Air contains 20% oxygen by volume. Calculate the volume of air needed each minute.

Give one reason why a fuel cell forklift truck is more suitable for use inside a warehouse than a diesel forklift truck.

6.4 Chemical cells and fuel cells

6.4 Chemical cells and fuel cells Questions