- Zn-s-Cl-2-1- atm- - Zn-2-2Cl-E-o-2-12 V- - To increase the e-m-f- of the above cell- -Zn-2- should be increased- -Zn-2- should be decreased- -Cl- should be increased- PCl-2- should be decreased

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Nernst Equation

Zn(s)+Cl_2(1 ...

Question

$Z n (s) + C l_{2} (1$ atm $) \to Z n^{2 +} + 2 C l^{-} : E^{o} = 2.12 V$ . To increase the e.m.f. of the above cell:

[Z n^{2 +}]

should be increased

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[Z n^{2 +}]

should be decreased

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[C l^{-}]

should be increased

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P C l_{2}

should be decreased

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Z n (s) + C l_{2} (1 atm) \to Z n^{2 +} + 2 C l^{-}

E^{\circ}

2.12 V

E

Z n (s) | Z n^{2 +} (a q) | | C u^{2 +} (a q) | C u (s)

E_{c e l l}

Z n (s) | Z n^{2 +} (a q) | | C u^{+ 2} (a q) | C u (s)

E_{c e l l}

E^{o}

{Z n}^{2 +} | Z n

- 0.76

Z n ∣ ∣ {Z n}^{2 +} (1 M) ∣ ∣ ∣ ∣ 2 H^{+} (1 M) ∣ ∣ H_{2} (1 a t m)

Z n^{2 +}

Z n^{2 +} (a q) + 4 N H_{3} (a q) ⇌ [Z n (N H_{3})_{4}]^{2 +} (a q)

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