39. A galvanic cell is composed of two hydrogen electrodes, one of which is a standard one. In which of the following solutions should the other electrode be immersed to get maximum EMF A) 0.1M HCL B) 0.1M H2SO4 C) 0.1M NH4OH

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A Galvanic cell is composed of two hydrogen electrodes, one of which is a standard one. In which of the following solutions should the other electrode be immersed to get maximum emf.

Q. A galvanic cell is made up of two hydrogen electrodes one of which is a standard one. In which of the following solutions should the other electrode be immersed to get maximum emf ?

A galvanic cell is made up to S.H.E and another hydrogen electrode. The other hydrogen should be immersed in which of the following solutions to get maximum value of e.m.f :

P t | H_{2} (g, P_{1}) | H C l (0.1 M) | H_{2} (g, P_{2}) | P t

A concentration cell is formed by two hydrogen electrodes having hydrogen gas at different pressures

P_{1} & P_{2}

, dipped in the same electrolytic solution

(0.1 M H C l)

298 K

.
Choose the correct option :

Q. A galvanic cell consists of a metallic. zinc plate immersed in 0.1 M

Zn {(N O_{3})}_{2}

solution and metallic plate of lead in 0.02 M

Pb {(N O_{3})}_{2}

solution. Calculate the emf of the cell write the chemical equation for the electrode reactions and represent the cell. (Given

E_{Z n^{2 +}, Z n}^{\circ} = - 0.76 V, E_{P b^{2 +}, P b}^{\circ} = 0.13 V

)

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