Home
Class 12
CHEMISTRY
The standard EMF of decinormal calomel e...

The standard `EMF` of decinormal calomel electrode is `0.268 V`. The `EMF` is

A

`-0.298V`

B

`0.327V`

C

`-0.327V`

D

`0.298V`

Text Solution

Verified by Experts

The correct Answer is:
b
`E=E^(c-)-(0.059)/(2)log [Cl^(c-)]^(2)`
`=0.268-(0.059)/(2) log (0.1)^(2)`
`=0.268-(0.059)/(2) xx log 10^(-2)`
`=0.268+0.059=0.327V`
Promotional Banner

Similar Questions

Explore conceptually related problems

Define standard emf of a cell.

The e.m.f. of the cell : Cu(s)"|"Cu^(2+)(1M)"||"Ag^(+)(1M)"|"Ag is 0.46 V. The standard reduction reduction potential of Ag^(+)//Ag is 0.80 V. The standard reduction potential of Cu^(2+)//Cu is

The standard emf of galvanic cell involving 3 moles of electrons in its redos reaction is 0.59V. The equilibrium constant for the reaction of the cell is

The standard reduction potential of Fe^(3+), Fe^(2+)//Pt is + 0.771V . This half cell is connected with another half cell such that e.m.f. of the cell is 0.771V. What is the other half cell ?

The e.m.f. of the cell, Cu(s)|Cu^(2+)(aq)"||"Ag^(+)(aq)|Ag(s) is 0.46 V. The standard reduction potential of Ag^(+)//Ag is 0.80 V. The standard reduction potential of Cu^(2+)|Cu will be

A saturated calomel electrode is coupled through a salt bridge with a quinhydrone electrode dipping in 0.1 M NH_(4)Cl . The observed EMF at 25^(@)C is 0.152V . Find the dissociated constant of NH_(4)OH . The oxidation potential of saturated calomel electrode =-0.699V at 25^(@)C .