In which of the following reactions does H₂SO₄ act as an oxidizing agent and as an acid?
Correct answer: C. Cu + 2H₂SO₄ → CuSO₄ + SO₂ + 2H₂O
- A. CaF₂ + H₂SO₄ → CaSO₄ + 2HF
- B. S + 2H₂SO₄ → 3SO₂ + 2H₂O
- C. Cu + 2H₂SO₄ → CuSO₄ + SO₂ + 2H₂O
- D. PCl₅ + H₂SO₄ → SO₂Cl₂ + POCl₃ + HCl
Explanation
In this reaction, H₂SO₄ oxidizes copper from 0 to +2. It also acts as an acid, though some of the sulfate ions simply act as spectator ions in the formation of CuSO₄, while others are reduced to SO₂.
Report an error
The more specific you are, the faster it gets fixed. A source beats an opinion.
Prefer email? [email protected]
About Electrochemistry
Electrochemistry describes electron transfer through oxidation and reduction, identifies oxidizing and reducing agents, and applies oxidation numbers to balance redox equations. It also covers electrode potential and the standard hydrogen electrode, which provides the reference for comparing the reduction tendencies of other electrodes.
Practise Electrochemistry
696 free Electrochemistry MCQs from Chemistry, each with the correct answer and an explanation. Unlimited attempts, no account needed.
Discussion
Stuck on an option, or know a faster way to get there? Ask or explain it here.
No comments yet. Be the first to explain this one.
Exams that ask Chemistry questions like this
Chemistry is on 14 papers prepared for on TestUstad, and all of them draw the same bank, so this question is worth knowing for every one of them.