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Question: Answered & Verified by Expert
The standard reduction potentials (in V) of a few metal ion/metal electrodes are given below.
The reducing strength of the metals follows the order.
ChemistryElectrochemistryKVPYKVPY 2015 (SB/SX)
Options:
  • A $\mathrm{Ag}>\mathrm{Cu}>\mathrm{Pb}>\mathrm{Cr}$
  • B $\mathrm{Cr}>\mathrm{Pb}>\mathrm{Cu}>\mathrm{Ag}$
  • C $\mathrm{Pb}>\mathrm{Cr}>\mathrm{Ag}>\mathrm{Cu}$
  • D $\mathrm{Cr}>\mathrm{Ag}>\mathrm{Cu}>\mathrm{Pb}$
Solution:
1277 Upvotes Verified Answer
The correct answer is: $\mathrm{Cr}>\mathrm{Pb}>\mathrm{Cu}>\mathrm{Ag}$
Which have low value of reduction potential is a good reducing agent.
$$
\mathrm{Cr}>\mathrm{Pb}>\mathrm{Cu}>\mathrm{Ag}
$$

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