What Is Not a Good Laboratory Method for the Preparation

question 140

Multiple Choice

What is not a good laboratory method for the preparation of oxygen?

• A)photosynthesis of sugars: 6 CO₂(g)+ 6 H₂O(l)→ 6 O₂(g)+ ₆H₁₂O₆(s)
• B)electrolysis of water: 2 H₂O(l)→ 2 H₂(g)+ O₂(g)
• C)catalytic decomposition of hydrogen peroxide: 2 H₂O₂(aq)→ 2 H₂O(l)+ O₂(g)
• D)thermal decomposition of potassium chlorate: 2 KClO₃(s)→ 2 KCl(s)+ 3 O₂(g)

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