Given: $E^{0} (C u^{2 +} / C u) = 0.337 V$ and $E^{0} (S n^{2 +} / S n) = - 0.136 V .$ Which of the following statements is correct?

C u^{2 +}

ions can be reduced by

H_{2} (g)

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C u

can be oxidised by

H^{+}

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S n^{2 +}

ions can be reduced by

H_{2} (g)

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None of the above

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Solution

The correct option is A $C u^{2 +}$ ions can be reduced by $H_{2} (g)$
Standard electrode potential is measured with reference to Standard Hydrogen electrode (SHE) which is taken as zero. Any electrode with positive standard potential can be reduced by $H_{2}$ .
As $E_{C u^{2 +} / C u}^{0} = 0.337 > E_{H^{+} / H_{2}}^{0}$
$∴ C u^{2 +}$ can be reduced by $H_{2}$
$E^{0} (S n^{2 +} / S n) < 0$
So, it has a higher tendency to oxidise when coupled with $H_{2} (g)$

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Similar questions

Q. Given :

E^{0} (C u^{2 +} / C u)

=0.337 V and

E^{0} (S n^{2 +} / S n)

=-0.136 V. Which of the following statements is correct?

Q. Which of the following statement is correct?
if

E_{C u^{2 +} | C u}^{\circ} = 0.34 V

and

E_{S n^{2 +} | S n}^{\circ} = - 0.136 V

E_{H^{+} | H_{2}}^{\circ} = - 0.0 V

Q. Calculate the cell potential of the following cell at

25

^{0}

P t, H_{2 (1 a t m)} | H {^{+}}_{(0.01 M)} | | C u {^{+ 2}}_{(0.1 M)} | C u

[E {^{0}}_{C u^{2 +} / C u} = 0.337 V]

Given:
$E_{A g^{+} / A g}^{0} = 0.80 V$ ,
$E_{M g^{2 +} / M g}^{0} = - 2.37 V$ ,
$E_{C u^{2 +} / C u}^{0} = 0.34 V$ ,
$E_{H g^{2 +} / H g}^{0} = 0.79 V$
Which of the following statements is/are correct ?

Q. Which of the following statement is correct?

E_{{C u}^{2 +} | C u}^{\circ} = 0.34 V

and

E_{S n^{2 +} | S n}^{\circ} = - 0.136, E_{H^{+} | H_{2}}^{\circ} = - 0.0 V

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Given: E0(Cu2+/Cu)=0.337V and E0(Sn2+/Sn)=−0.136V. Which of the following statements is correct?

Given: $E^{0} (C u^{2 +} / C u) = 0.337 V$ and $E^{0} (S n^{2 +} / S n) = - 0.136 V .$ Which of the following statements is correct?