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प्रश्न
Answer the following:
Which of the following species are reducing agents? Arrange them in order of increasing strength under standard state conditions. The standard potentials are given in parenthesis.
K (–2.93V), Br2(1.09V), Mg(–2.36V), Ce3+(1.61V), Ti2+(–0.37V), Ag+ (0.8 V), Ni (–0.23V).
उत्तर
- The species on the right-hand side of the half-reactions are reducing agents. Thus, reducing agents are K, Mg, Ti2+, Ni
- The strength of reducing agents increases as E° values decrease. Increasing strength of reducing agents is as follows:
`"Ni"_((-0.23 "V")) < "Ti"_((- 0.37 "V"))^(2+) < "Mg"_((- 2.36 "V")) < "K"_((- 2.93 "V"))`
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