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Copper reduces NO3^(-) into NO and NO2 d...

Copper reduces `NO_3^(-)` into NO and `NO_2` depending upon concentration of `HNO_3` in solution . Assuming `[Cu^(2+)] = 0.1 M ` , and `P_(NO) = P_(NO_2) = 10^(-3)` bar . At which concentration of `HNO_3 `. Thermodynamic tendency for reduction of `NO_3^(-) ` into` NO and NO_2` by copper is same ?
Given : `E_(Cu^(2+)|Cu)^(@) = + 0.34 V , E_(NO_3^(-)|NO)^(@) = + 0.96 V , E_(NO_3^(-)|NO_2)^(@) = + 0.79 V `

A

`10^(1.23)M`

B

`10^(0.56)M`

C

`10^(0.66)M`

D

`10^(0.12)M

Text Solution

Verified by Experts

The correct Answer is:
C
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