Water Can Be Decomposed by Electrolysis to Hydrogen Gas and Oxygen

question 10

Multiple Choice

Water can be decomposed by electrolysis to hydrogen gas and oxygen gas.What mass of water must decompose to yield 24.0 L of oxygen gas at 1.00 atm and 25°C?
2H₂O(l) → 2H₂(g) + O₂(g)

• A) 11.1 g
• B) 17.7 g
• C) 23.6 g
• D) 35.3 g
• E) 70.7 g

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