Redox Reactions And Electrochemistry Ques 123

Question: The standard reduction potentials at 298,K for the following half reactions are given against each Zn2+(aq.)+2eZn(s) ; - 0.762 Cr3+(aq)+3eCr(s) ; - 0.740 2H+(aq)+2eH2(g) ; 0.00 Fe3+(aq)+eFe2+(aq) ; 0.770 Which is the strongest reducing agent [IIT 1981; MP PET/PMT 1988; MP PMT 1989; MH CET 2001]

Options:

A) Zn(s)

B) Cr(s)

C) H2(g)

D) Fe2+(aq)

Show Answer

Answer:

Correct Answer: A

Solution:

More negative is the reduction potential, higher will be the reducing property, i.e. the power to give up electrons.



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