During the electrolysis of acidified water, which gas is liberated at the anode?

💡 Solution & Explanation

During the electrolysis of acidified water, oxygen gas is liberated at the positively charged anode through an oxidation half-reaction, while hydrogen gas is collected at the negatively charged cathode. Water molecules undergo decomposition in the presence of dilute sulfuric acid because pure water is a poor conductor of electricity. The volume ratio of hydrogen to oxygen collected is two to one.