Chemistry, asked by rhe5awalmandb, 1 year ago

What is the potential of a cell containing two hydrogen electrodes in which the anode is in contact with 10(Power negative 5) M Hcland the cathode is in contact with 1000 times the concentration of Hcl as anode? Please help! URGENT!

Answers

Answered by MBhattacharjee
41
in  this cathode and anode boh aare hydrogen electrode 
[H^+] in cathode = 10 (power ngative 2 ) as the con of HCl is 1000 timess greater than that of anode and [H^+]  at anode is 10 (power negative 5 )
 E^0 cell = 0 as cathode and anode are htdrogen , therefore 
 EMF of cell = 0.059 / 1   log 10^-2 / 10^ -5 = 0.059 x  3 =0.177V.
Answered by hkspravin
23

Answer:

The answer is 0.18

Explanation:

Using emf formulae

E(cell) = E* + 0.0591/n log [cathode electrolyte]/[anode electrolyte]

        where [.....] denote the concentration respectively

now given hydrogen cell and for a hydrogen cell E*=0

since HCl is the electrolyte no of ions is 1 n=1

E = 0 + 0.0591 log10^3

   = 0.0591(3)

 = 0.18

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