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Electrolytic Cell

ntConsider th...

Question

ntConsider the reactionn ntCl2(g) + 2Br-(aq) -------2Cl-(aq) +Br2n ntThe emf of the cell whenn nt[Cl-]=[Br2]=[Br-]=0.01 M and Cl2 gas at 1 atm pressure will be (E0 for the above reaction is= 0.29 volt)n nt1. 0.54 voltn nt2. 0.35 voltn nt3. 0.24 voltn nt4. -0.29 voltn

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C l_{2} + 2 B r^{-} (a q) ⟶ 2 C l^{-} (a q) + B r_{2}

[C l^{-}] = [B r_{2}] = [B r^{-}] = 0.01 M

C l_{2}

1

E^{o}

T = 298 K

{C l}_{2} (g) + {2 B r}^{-} (a q) ⟶ {2 C l}^{-} (a q) + {B r}_{2} (a q)

[{C l}^{-}] = [{B r}^{-}] = 0.01 M

{C l}_{2}

E_{c e l l}^{o}

= 0.29 V

Δ G^{o}

A g C l (s) + 1 / 2 H_{2} (g) \to A g (s) + H^{+} (a q .) + {C l}^{-} (a q)

- 21.52 k J

2 A g C l (c) + H_{2} (g) \to A g (s) + 2 H^{+} (a q .) + 2 {C l}^{-} (a q .)

Δ G^{0} = - 42927

25^{0} C

H_{2} (g, 1 a t m) + 2 A g C l (s) ⇌ 2 A g (s) + 2 H^{+} (a q, 0.1 M) + 2 C l^{-} (a q, 0.1 M)

H_{2} (g) + 2 A g C l (s) \to 2 A g (s) + 2 H^{+} (a q .) + 2 C l^{-} (a q .)

- 10.26 k c a l m o l^{- 1}

25^{\circ} C

25^{\circ} C

P_{H_{2}} = 1 a t m . [H^{+}]

[C l^{-}] = 0.1

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