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निम्नलिखित तीन गैल्वेनी सेल I. Zn//Zn^...

निम्नलिखित तीन गैल्वेनी सेल
`I. Zn//Zn^(2+)(1M)||Cu^(2+)(1M)//Cu`
II. `Zn//Zn^(2+)(0.1M)||Cu^(2+)(1M)//Cu`
III. `Zn//Zn^(2+)(1M)||Cu^(2+)(0.1M)//Cu`
के विद्युत वाहक बल `E_(1), E_(2)` और `E_(3)` द्वारा निरूपित किए जाते हैं। निम्नलिखित में से कौन सा सत्य है?

A

`E_(1) gt E_(e) gt E_(3)`

B

`E_(3) gt E_(1) gt E_(2)`

C

`E_(3) gt E_(2) gt E_(1)`

D

`E_(2) gt E_(1) gt _(3)`

Text Solution

Verified by Experts

The correct Answer is:
D
`E_("सेल")=E_("सेल")^(@)-(2.303RT)/(nF)log ([Zn^(2+))/([Cu^(2+)])`
`E_(1)=E_("सेल")^(@)-(2.303RT)/(2R) "log"(1)/(1)=E_("सेल")^(@)`
`E_(2)=E_("सेल")^(@)-(2.303RT)/(2F)"log(0.1)/(1)`
`=E_("सेल")^(@)+(2.303RT)/(2F)`
`E_(3)=E_("सेल")^(@)-(2.303RT)/(2F)`
`=E_("सेल")^(@)=(2.303RT)/(2F)`
अतः `E_(2) gt E_(1) gt E_(3)`
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