22. The EMF of a concentration cell consisting of two Zn electrodes, one dipping into M/4 solution of zinc sulphate and the other into M/16 solution of the same salt at 25 degree celsius is : 1. 0.0125 V 2. 0.0250 V 3. 0.0178 V 4. 0.0356 V

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The emf of a concentration cell consisting of two zinc electrode, one dipping into M/4 solution of zinc sulphate and the other into M/16 solution of the same salt at 25 $^{0}$ C :

Q. The EMF of a concentration cell consisting of two zinc electrodes, on dipping into M/4 solution of

Z n S O_{4}

and the other M/16 solution of the same salt at

25^{\circ} C

is:

Q. What is the single electrode potential of a half-cell for zinc electrode dipping in

0.01 M Z n S O_{4}

solution of

25^{\circ} C

? The standard electrode potential of

Z n / Z n^{+}

system is

0.763

volt at

25^{\circ} C

A zinc electrode is dipped in a 0.1 M solution at $25^{0} C$ . Assuming that salt is dissociated to 20% at this dilution. Calculate the electrode potential. $E {^{0}}_{Z n^{2 +} / Z n} = - 0.76 V$ .

Q. A piece of zinc metal is dipped in a

0.1 M

solution of zinc salt. The salt is dissociated to the extent of

20

%. Calculate the electrode potential of

Z n^{2 +} / Z n

.
(Given:

E_{Z n^{2 +} / Z n}^{\circ} = - 0.76 v o l t

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