In which of the following cells, use of salt bridge to eliminate liquid junction potential is not necessary?

P t H_{2} (g) | H C l | A g C l (s) | A g

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H g | H g_{2} C l_{2} (s) | K C l s a t u r a t e d | H C l (a q) | H_{2} (g) P t

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Z n | Z n S O_{4} | | C u S O_{4} | C u

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Z n | Z n S O_{4} | F e^{3 +} (a q), F e^{2 +} (a q) | P t

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Solution

The correct option is A $P t H_{2} (g) | H C l | A g C l (s) | A g$
In the cell $P t H_{2} (g) | H C l | A g C l (s) | A g$ , use of salt bridge to eliminate liquid junction potential is not necessary as it involves only one $(C l^{-})$ ion.

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Similar questions

Z n (s) | Z n^{2 +} (a q) | | M^{x +} (a q) | M (s)

$M^{x +} (a q / M (s))$	$A u^{3 +} (a q) / A u (s)$	$A g^{+} / A g (s)$	$F e^{3 +} (a q) / F e^{2 +} (a q)$	$F e^{2 +} (a q) / F e (s)$
$E_{M^{x +} / M^{/ (V)}}^{o}$	$1.40$	$0.80$	$0.77$	$- 0.44$

E_{Z n^{2 +} / Z n}^{o} = - 0.76 V

E_{c e l l}^{o}

Z n | Z n S O_{4} | | C u S O_{4} | C u

C u S O_{4} + Z n \to C u + Z n S O_{4}

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