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Question

In the reaction
HAsO2+Sn2+As+Sn4+H2O,
oxidising agent is

A
Sn2+
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B
Sn4+
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C
As
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D
HAsO2
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Solution

The correct option is D HAsO2
Oxidizing agent undergoes reduction during a redox reaction
+3HAsO2++2SnAs+2+Sn+H2O
Hence, here HAsO2 is acting as an oxidizing agent.

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