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Questions  

The standard potentials at 298 K are

EZn2+Zn=0.763V, ECr3+Cr=0.41V

EH+H2Pt=0.00   and  EFe3+,Fe2+Pt=0.770V

Which is the strongest reducing agent?

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By Expert Faculty of Sri Chaitanya
a
Zn(s)
b
Cr (s)
c
H2(g)
d
Fe2+(aq)
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detailed solution

Correct option is A

The smaller the value of reduction potential, lesser the reduction tendency of the ion and larger the oxidation tendency of the corresponding metal. Larger oxidation tendency implies stronger reducing agent.

A reducing agent is a substance that undergoes oxidation to a higher valency state in a redox reaction and loses electrons to other substances in the process. In an oxidation-reduction process, a reducing agent is one of the reactants that reduces another reactant by discharging electrons onto it.


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