Question

Write the ratio of the mass of the gas collected at the cathode to the mass of the gas collected at the anode.

Answer 1

The cathode produces 2 moles of hydrogen gas, while the anode produces 1 mole of oxygen gas. The molar masses of hydrogen gas and oxygen gas are approximately 2 g/mol and 32 g/mol, respectively, resulting in a mass ratio of nearly 1 : 16. The mass ratio of hydrogen gas collected at the cathode to oxygen gas collected at the anode is 2 : 1.