Given that EK- K- - -2-93 V- EFe2- Fe- - -0-44 V- EZn2- Zn- - -0-76 V- ECu-2 - Cu- - 0-34 VBased on this data- which of the following is the strongest reducing agent-

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Standard X

Chemistry

Electrochemical Series

Given that ...

Question

Given that $E_{K^{+} / K}^{\circ} = - 2.93 V; E_{F e^{2 +} / F e}^{\circ} = - 0.44 V; E_{Z n^{2 +} / Z n}^{\circ} = - 0.76 V; E_{C u^{+ 2} / C u}^{\circ} = 0.34 V$
Based on this data, which of the following is the strongest reducing agent?

C u_{(s)}

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K_{(a q)}^{+}

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Z n_{(a q)}^{2 +}

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F e_{(s)}

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Solution

The correct option is D $F e_{(s)}$
$K_{(a q)}^{+}$ and $Z n_{(a q)}^{2 +}$ can not lose electron(s). $F e$ has greater tendency to lose electrons than $C u$ .
$[E_{F e / F e^{2 +}}^{\circ} = 0.44 V > E_{C u / C u^{2 +}}^{\circ} = - 0.34 V]$
Hence, option D is correct

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Similar questions

Q. Arrange the following metals in which they displace each other from the solutions of their salts in decreasing order:

A l, C u, F e, M g

and

Z n

E_{A l^{3} + / A l}^{0} + - 1.66 V, E_{C u^{2} + / C u}^{0} = + 0.34 V

E_{F e^{2} + / F e}^{0} = - 0.44 V, E_{M g^{2} + / M g}^{0} = - 1.40 V

E_{Z n^{2} + / Z n}^{0} = - 0.76 V

Which metal is considered best for protecting the other metal?

$E {^{0}}_{F e^{2 +} / F e} = - 0.44 V, E {^{0}}_{Z n^{2 +} / Z n} = - 0.76 V$
$E {^{0}}_{M g^{2 +} / M g} = - 2.37 V, E {^{0}}_{C u^{2 +} / C u} = - 0.34 V$

Q. Given that,'

E_{N i^{2 +} / N i}^{\circ} = - 0.25 V, E_{C u^{2 +} / C u}^{\circ} = + 0.34 V

E_{A g^{2 +} / A g}^{\circ} = + 0.80 V, E_{Z n^{2 +} / Z n}^{\circ} = - 0.76 V

Which of the following redox processes will not take place in specified direction?

Q. Given,

E_{A g^{+} / A g}^{\circ} = + 0.80 V, E_{C o^{2 +} / C o}^{\circ} = - 0.28 V, E_{C u^{2 +} / C u}^{\circ} = + 0.34 V, E_{Z n^{2 +} / Z n}^{\circ} = - 0.76 V

,
Which metal will corrode to greater extent?

E_{N a^{+} / N a (s)}^{0} = - 2.71 V

E_{M g^{2 +} / M g (s)}^{0} = - 2.37 V

E_{F e^{2 +} / F e (s)}^{0} = - 0.44 V

and

E_{C r^{3 +} / C r (s)}^{0} = - 0.41 V

Based on this data, state which of the following is the weakest reducing agent.

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Given that E∘K+/K=−2.93 V;E∘Fe2+/Fe=−0.44 V;E∘Zn2+/Zn=−0.76 V;E∘Cu+2/Cu=0.34 VBased on this data, which of the following is the strongest reducing agent?

The correct option is D Fe(s)K+(aq) and Zn2+(aq) can not lose electron(s). Fe has greater tendency to lose electrons than Cu.[E∘Fe/Fe2+=0.44 V>E∘Cu/Cu2+=−0.34 V]Hence, option D is correct

Given that $E_{K^{+} / K}^{\circ} = - 2.93 V; E_{F e^{2 +} / F e}^{\circ} = - 0.44 V; E_{Z n^{2 +} / Z n}^{\circ} = - 0.76 V; E_{C u^{+ 2} / C u}^{\circ} = 0.34 V$
Based on this data, which of the following is the strongest reducing agent?

The correct option is D $F e_{(s)}$
$K_{(a q)}^{+}$ and $Z n_{(a q)}^{2 +}$ can not lose electron(s). $F e$ has greater tendency to lose electrons than $C u$ .
$[E_{F e / F e^{2 +}}^{\circ} = 0.44 V > E_{C u / C u^{2 +}}^{\circ} = - 0.34 V]$
Hence, option D is correct