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162. Split the following redox reactions in oxidation and reduction half reactions:
$left parenthesis straight a right parenthesis space 2 straight K left parenthesis straight s right parenthesis space plus space Cl subscript 2 left parenthesis straight g right parenthesis space space rightwards arrow space space space 2 KCl left parenthesis straight s right parenthesis left parenthesis straight b right parenthesis space 2 Al left parenthesis straight s right parenthesis space plus space 3 Cu to the power of 2 plus end exponent left parenthesis aq right parenthesis space space rightwards arrow space space space 2 Al to the power of 3 plus end exponent left parenthesis aq right parenthesis space plus space 3 Cu left parenthesis straight s right parenthesis$

(a) The given reaction

(i) Oxidation half-reaction.

(ii) Reduction half reaction:


(b) The given reaction

(i) Oxidation half reaction:

(ii) Reduction half reaction:

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163.

What is electrode potential? Name the factors on which it depends.

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164. What do you know about the standard hydrogen electrode? What is its significance ?

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Short Answer Type

165.

Can we measure the absolute value fo single electrode potential? Explain.

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166.

Define standard electrode potential of an electrode.

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Long Answer Type

167. How will you determine the standard reduction potential (E°) of an electrode experimentally?

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168. What is electrochemical series? What are its important applications?

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Short Answer Type

169.

Given the standard electrode potentials,

$straight K to the power of plus divided by straight K space equals negative 2.93 space straight V comma space space space Ag to the power of plus divided by Ag space equals space 0.80 space straight V Hg to the power of 2 plus end exponent divided by Hg space equals space 0.79 space straight V Mg to the power of 2 plus end exponent divided by Mg space equals space minus 2.37 space straight V comma space space space Cr to the power of 3 plus end exponent divided by Cr space equals space minus 0.74 space straight V arrange space these space metals space in space their space increasing space order space of space reducing space power.$

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170.

Arrange the following metals in order in which they displace each other:
Al, Cu, Fe, Mg, Zn.

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