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Question

Which of the reactants act as oxidant or reductant if any:

Si+2KOH+H2OK2SiO3+2H2

Identify the reducing agent?

A
Si
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B
KOH
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C
H2O
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D
None of these
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Solution

The correct option is C Si
Si+2KOH+H2OK2SiO3+2H2
The reducing agent is Si.
The oxidation number of Si changes from 0 to +4.
Thus, Si itself is oxidized.

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