Answer:
2:1
Step-by-step explanation:
Correct option is C)
We can see from the balanced equation, that the mole ratio of hydrogen to oxygen is 2:1 , both in the water molecule and in the reactants, hydrogen gas (H
2
) and oxygen gas (O
2
). The electrolysis of water causes the decomposition of water, (H
2
O), which produces hydrogen and oxygen.