Home
Class 12
CHEMISTRY
A hydrogen electrode placed in a buffer ...

A hydrogen electrode placed in a buffer solution of `CH_(3)COONa` and `CH_(3)COOH` in the ratios of `x:y` and `y:x` has electrode potential values `E_(1)` volts and `E_(2)` volts, respectively at `25^(@)C` The `pK_(a)` values of acetic acid is `(E_(1)` and `E_(2)` are oxidation potential)

A

`(E_(1)+E_(2))/(0.118)`

B

`(E_(2)-E_(1))/(0.118)`

C

`-(E_(1)+E_(2))/(0.118)`

D

`(E_(1)-E_(2))/(0.118)`

Text Solution

Verified by Experts

The correct Answer is:
A
Promotional Banner

Similar Questions

Explore conceptually related problems

A hydrogen electrode placed in a solution containing sodium acetate and acetic acid in the ratio of x:y and y:x has an electrode potential value E_(1) and E_(2) volts, respectively, at 25^(@)C . The pK_(a) value of acetic acid is _____

A hydrogen electrode placed in a solution containing CH_(3)COOK and CH_(3)COOH in the ration a:b and b:a has electrode potential values of -1.59 and +1.0V, respectively. Calculate pK_(a) of CH_(3)COOH.

A hydrogen electrode placed in a buffer solution of sodium cyanide and HCN in the ration of x:y and y:x has electrode potential value a and b volts, respectively, at 25^(@)C . If the difference a-b=35.52mV, what is the ratio of y:x.

A hydrogen electrode placed in a solution containing sodium acetate and acetic acid in the ratio of x:y and y:x , ahs electrode potential values of -1.5 and -0.5V , respectively. What is the pK_(a) value of acetic acid?

A hydrogen electrode X was placed in a buffer solution of sodium acetate ad acetic acid in the ratio a:b and another hydrogen electrode Y was placed in a buffer solution of sodium acetate ad acetic in the ratio b:a if reduction potential values for two cells are found to be E_(1) and E_(2) respectively w.r.t. standard hydrogen electrode, the pK_(a) value of the acid can be given as (A) (E_(1)-E_(2))/(0.118) (B). -(E_(1)+E_(2))/(0.118) (C). (E_(1))/(E_(2))xx0.118 (D). (E_(2)-E_(1))/(0.118)

The pH of a buffer solution containing 25 ml of 1 M CH_(3)COONa " and 1 M " CH_(3)COOH will be appreciably affected by

When a rod of metal A is dipped in an aqueous solution of metal B (concentration of B^(2+) = 1M ) at 25^(@) C , the electrode potentials are A^(2+) /A = -0.76 Volts, B = +0.343 Volts.

The oxidation electrode potential E, of a 0.1 M solution of M^(+) ions (E_(RP)^(o) = - 2.36 V) is :

The standard reduction potential of Pb and Zn electrodes are -0.12 6 and -0.763 volts respectively . The e.m.f of the cell Zn|Zn^(2+)(0.1M)||Pb^(2+)(1M)|Pb is

Statement : If two half reaction with electrode potential E_(1)^(@) and E_(2)^(@) gives a third reaction then, DeltaG_(3)^(@) = DeltaG_(1)^(@) + DeltaG_(2)^(@) Explanation : E_(3)^(@) = E_(1)^(@) + E_(2)^(@)