Question

what of the following redox couple is strong reducing agent Li(E°=3.05v)and Mg(E°=-2.36v)​

Answer 1

Answer:

Li

Explanation:

bcoz it acquire the first position on the electrochemical series and having strongest oxidation potantial ...so that ha strongest Reducing agent

Answer 2

The strong reducing agent is lithium.

Explanation:

Reducing agents are defined as the agents which reduces the other substance and itself gets oxidized. These agents undergoes reduction reactions.

Oxidation reaction is defined as the reaction in which an atom looses its electrons. Here, oxidation state of the atom increases.

$X\rightarrow X^{n+}+ne^-$

The substance having highest positive $E^o$ (reduction potential) value will always get reduced and will undergo reduction reaction.

So, more negative the value of $E^o$ (oxidation potential) value will always get oxidized and will undergo oxidation reaction.

We are given:

$E^o_{Mg^{2+}/Mg}=-2.36V\\\\E^o_{Li^{+}/Li}=-3.05V$

As, reduction electrode potential of lithium is more negative, so it will act as a stronger reducing agent.

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