Home
Class 12
CHEMISTRY
Given that the standard reduction potent...

Given that the standard reduction potentials for `M^(+)//M and N^(+)//N` electrodes at 298 K are 0.52 V and 0.25 V respectively. Which of the following is correct in respect of the following electrochemical cell?
`M|M^(+)||N^(+)|N`

A

The overall cell reaction is a spontaneous reaction

B

The standard EMF of the cell is `-0.27 V`

C

The standard EMF of the cell is 0.77 V

D

The standard EMF of the cell is `-0.77V`

Text Solution

Verified by Experts

The correct Answer is:
B
`E_("cell")^(@)=E_("cathode")^(@)-E_("anode")^(@)`
`=E_((N^(+)//N))^(@)-E_((M^(+)//M))^(@)`
`=(0.25-0.52)V=-0.27V`
Since, `E_("cell")^(@)` is negative, the cell reaction is non-spontaneous.
Promotional Banner

Similar Questions

Explore conceptually related problems

Which of the following statements are correct for an electron that has n = 4, and m = -2 ?

The standard reduction potential of Cu^(2+)|Cu and Ag^+|Ag electrodes are 0.337 and 0.799 volt respectively. Construct a galvanic cell using these electrodes so that its standard emf is positive. For what concentration of Ag^(+) will the emf of the cell at 25^@ C be zero if the concentration of Cu^(2+) is 0.01M?

The (m+n) th and (m-n ) th terms of a G.P are p and and q respectively . The the mth term of the G.P is

Two electrode A and B have standard electrode potential of -0.76V and 0.34V resprctively. Identify the oxidation and reduction electrodes, IF they are coupled to form a cell.

Two half cells have potentials -0.76V and -0.13V respectively. A galvanic cell is made from these two half-cells. Which of the following statements is correct ?

Two electrode A and B have standard electrode potential of -0.76V and 0.34V respectively. Find the standard cell potential of the cell formed.

The standard reaction potential of a calomel half cell is 0.28V at 25^@C . Calculate half cell potential when 0.1N KCl solution is used