It requires 40.05ml of 1MCe4+ to titrate 20 ml of 1 M Sn2+ to Sn4+. What is the oxidation state of the cerium in the product ?
A
1+
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B
2+
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C
3+
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D
4+
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Solution
The correct option is C 3+ Number of equivalents ofCe4+=Number of equivalents ofSn2+ 40.05×1×n-factor=20×1×2 ⇒n-factor ofCe4+=1
Therefore oxidation state change will be Ce4+→Ce3+
Hence, the correct answer is option (c).