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Question
Assign oxidation numbers to the underlined elements in the following species:
H2S2O7
Numerical
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Solution
H2S2O7
| +1 | x | -2 |
| H2 | S2 | O7 |
Then, we have
2(+1) + 2(x) + 7(-2) = 0
⇒ 2 + 2x - 14 = 0
⇒ 2x = 12
⇒ x = + 6
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