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E(Cu^(4+)//Cu^(4-))^(@) के मान की गणना ...

`E_(Cu^(4+)//Cu^(4-))^(@)` के मान की गणना कीजिए। यदि सेल अभिक्रिया `2Ce^(4+) + Co to 2Ce^(3+) + Co^(2+)` के लिए, `E_("cell")^(@)` का मान `1.89 V`
यदि `E_(Cu//Cu^(2+))^(@) = -0.28 V`

A

`-1.64 V`

B

`+1.61 V`

C

`-2.08 V`

D

`+2.17 V`

Text Solution

Verified by Experts

The correct Answer is:
B
इस सेल में Co ऑक्सीकृत होता है और यह ऐनोड के रूप में कार्य करता है तथा Ce कैथोड के रूप में कार्य करता है।
`E_("cell")^(@) = E_("cathode")^(@) - E_("anode")^(@) = 1.89 = E_("cell"^(@) -(-.28)`
`E_("cell")^(@) = 1.89 - 0.28 = 1.61` volt
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