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निम्नलिखित अभिक्रिया वाले गैल्वेनी सेल क...

निम्नलिखित अभिक्रिया वाले गैल्वेनी सेल का मानक सेल विभव क्या होगा?
`2Cr_((s))+3Cd_((aq))^(2+)to2Cr_((aq))^(3+)+Cd_((s))`
[दिया गया है `E_(Cr^(3+)//Cr)^(@)=-0.74V` और `E_(Ce^(2+)//Cd)^(@)=-0.040V`]

A

`0.74V`

B

`1.14V`

C

`0.34V`

D

`-0.34V`

Text Solution

Verified by Experts

The correct Answer is:
C
`E_("सेल")^(@)=E_("कैथोड")^(@)-E_("एनोड")^(@)`
`E_("सेल")^(@)=E_(cd^(2+)//Cd)^(@)-C_(r^(3+)//Cr)^(@)`
`=-0.40-(-0.74)=+0.34V`
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