Home
Class 12
CHEMISTRY
It has been found that the pH of a 0.01M...

It has been found that the pH of a 0.01M solution of an organic acid is 4.15. Calculate the concentration of the anion, the ionization constant of the acid and its `pK_(a)`.

Text Solution

Verified by Experts

`HA to H^(+) + A^(-)`
`pH=4.15=-log[H^(+)] implies[H^(+)]=[A^(-)]=7.079xx10^(-5)M`
`K_(a)=([H^(+)][A^(-)])/([HA]) =(7.079xx10^(-5)(7.079xx10^(-5)))/0.01=5.0xx10^(-7)`
`pK_(a)=-ogK_(a)=-log[5xx10^(-7)]=7-0.699=6.301`
Promotional Banner

Topper's Solved these Questions

  • IONIC EQUILIBRIUM

    VMC MODULES ENGLISH|Exercise LEVEL 1|75 Videos

  • IONIC EQUILIBRIUM

    VMC MODULES ENGLISH|Exercise LEVEL 2|50 Videos

  • INTRODUCTION TO ORGANIC CHEMISTRY

    VMC MODULES ENGLISH|Exercise JEE ADVANCED ARCHIVE|81 Videos

  • JEE MAIN - 5

    VMC MODULES ENGLISH|Exercise PART II : CHEMISTRY (SECTION - 2)|5 Videos

Similar Questions

Explore conceptually related problems

It has been found that the pH of a 0.01 M solution of an organic acid is 4.15 . Calculate the concentration of the anion, the ionization constant of the acid and its pK_(a) .

Calculate the concentration of hydrogen ion in the acidic solution with pH a. 4.3

The pH of 0.1 M solution of cyanic acid (HCNO) is 2.34 . Calculate the ionization constant of the acid and its degree of ionisation in the solution.

A solution of an acid has pH= 4.70 . Find out the concentration of OH^(-) ions (pK_(w)=14) .

The ionization constant of acetic acid 1.74xx10^(-5) . Calculate the degree of dissociation of acetic acid in its 0.05 M solution. Calculate the concentration of acetate ion in the solution and its pH .

What is the pH of a solution of 0.28 M acid and 0.84 M of its conjugate base if the ionization constant of acid is 4xx10^(-4) ?

The pH of a 0.1 molar solution of the acid HQ is 3 . The value of the ionisation constant, K_(a) of the acid is

The pH of a 0.1 molar solution of the acid HQ is 3 . The value of the ionisation constant, K_(a) of the acid is

Calculate the degree of dissociation (ionization) of 0.05 M acetic acid if its pK_(a) " is " 4.74 .

A 0.02 M solution of pyridinium hydrochloride has pH=3.44 . Calculate the ionization constant of pyridine.