Question

Write nerst equation for 2Cr+3Fe^2+-->2Cr^3+ + 3Fe

Answer 1

this is the Nernst equation

Answer 2

The Nernst equation is:

$2Cr(s)\ - > 2Cr^3+(aq)+6e\\\\3Fe^2+(aq)+6e\ - > 3Fe(s)$

$2Cr(s)+3Fe^2+(aq)\ - > 2Cr^3+(aq)+3Fe(s)$

$E_{cell}=E^0_{cell}+\frac{0.0591}{6} log\frac{ [Fe^{2+}]^3}{[Cr^{3+}]^2}$

The value of n will be 6.

Nernst equation shows the relationship between the cell potential (E), reaction quotient, the temperature in Kelvin, and standard cell potential($E_0$).

It helps in determining the cell potential under any temperature, pressure, and concentration, or we can say in any non-standard condition.

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