Electrolyze 18 grams of water to get 16 grams of oxygen and how many grams of hydrogen? A.18 g, B.20 g C.2 g D.4 g, why? Electrolysis of 18 grams of water gives 16 grams of oxygen and how many grams of hydrogen? A.18 g, B.20 g C.2 g D.4 g, why?

C
Law of conservation of mass

What is the mass and volume of oxygen obtained from the complete electrolysis of a gram of water to give 10 ml of hydrogen?

2H2O=2H2+O2, electrolytic ag water, in which all oxygen elements become oxygen, ag×16/18=8a/9g, the volume ratio of gas at the same temperature and pressure is equal to the ratio of its molecular number. From the equation, the volume ratio of H2 and O2 generated is 2:1, so the volume of oxygen is 10mL×1/2=5mL.
Answer: The mass of oxygen obtained is 8 a /9 g and the volume is 5 ml.

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