What is the oxidation number of S in H2SO4?
Answer and explanation
Correct answer: B. +6
- Step 1: The oxidation numbers in a neutral compound add up to zero, with O = -2 and H or K = +1.
- Step 2: Solving for S gives +6.
Answer
+6.
Why not the others: '+4' miscounts the oxygen contribution; '+7' adds one to the correct oxidation number; '-6' uses the wrong sign.
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