MyQuestionIcon

1

You visited us 1 times! Enjoying our articles? Unlock Full Access!

EMF

The standard ...

Question

The standard reduction potentials of ${C u}^{2 +} / C u$ and ${C u}^{2 +} / {C u}^{+}$ are $0.337$ and $0.153$ volts resectively. The standard electrode potential for ${C u}^{+} / C u$ half cell will be:

A

0.490 V

No worries! We‘ve got your back. Try BYJU‘S free classes today!

B

0.980 V

No worries! We‘ve got your back. Try BYJU‘S free classes today!

C

0.827 V

No worries! We‘ve got your back. Try BYJU‘S free classes today!

D

0.521 V

Right on! Give the BNAT exam to get a 100% scholarship for BYJUS courses

Open in App

Solution

The correct option is B $0.521 V$
Required relation

$E_{3} = \frac{n_{1} E_{1} - n_{2} E_{2}}{n_{3}}$

$∵$ Given, $+ 2 \to 0$ ...(i)
$+ 2 \to + 1$ ....(ii)

Required, $+ 1 \to 0$

$∴$ Subtract equation (ii) from equation (i)

Here, $n_{1} = 2, E_{1} = 0.337 V$ ....(iii)
$n_{2} = 1, E_{2} = 0.153 V$ .....(iv)
$n_{3} = 1$

$∴ E_{3} = \frac{2 \times 0.337 - 1 \times 0.153}{1}$

$E_{3} = 0.521 V$

Hence, the correct option is $D$

Suggest Corrections

thumbs-up

0

Similar questions

Q. The standard reduction potentials of

{C u}^{2 +} / C u

{C u}^{2 +} / {C u}^{+}

0.337

0.153

V respectively. The standard electrode potential of

{C u}^{+} / C u

Q. The standard reduction potentials of

C u^{2 +} / C u

C u^{2 +} / C u^{+}

0.337 V

0.153 V

respectively. The standard electrode potential of

C u^{+} / C u

Q. The standard reduction potential of

C u^{2 +} / C u

C u^{2 +} / C u^{+}

0.337

0.153 V

respectively. The standard electrode potential of

C u^{+} / C u

Q. The standard reduction potentials of

C u^{2 +} | C u

C u^{2 +} | C u^{⨁}

are 0.337 V and 0.153 V, respectively. The standard electrode potential of

C u^{⨁} | C u

C u^{2 +} + 2 e^{-} \to C u, E^{\circ} = 0.337 V

C u^{2 +} + e^{-} \to C u^{+}, E^{\circ} = 0.153 V

Electrode potential,

E^{\circ}

for the reaction,

C u^{+} + e^{-} \to C u

View More

Join BYJU'S Learning Program

similar_icon

Related Videos

lock

Electrode Potential and emf

CHEMISTRY

Watch in App

explore_more_icon

Explore more

Standard XII Chemistry

Join BYJU'S Learning Program

CrossIcon