Chemistry Standard 12>Chapter 3 - Ionic Equilibria>Exercises>Q 3

MEDIUM

12th Maharashtra Board

IMPORTANT

Earn 100

$pH$ of a weak monobasic acid is $3.2$ in its $0.02 M$ solution. Calculate its dissociation constant.

Important Questions on Ionic Equilibria

EASY

12th Maharashtra Board

IMPORTANT

Chemistry Standard 12>Chapter 3 - Ionic Equilibria>Exercises>Q 3

In

NaOH

solution

[{OH}^{-}]

is

2.87 \times 10^{- 4} M

. Calculate the

pH

of solution.

EASY

12th Maharashtra Board

IMPORTANT

Chemistry Standard 12>Chapter 3 - Ionic Equilibria>Exercises>Q 4

Define degree of dissociation. Derive Ostwald's dilution law for the

{CH}_{3} COOH

.

MEDIUM

12th Maharashtra Board

IMPORTANT

Chemistry Standard 12>Chapter 3 - Ionic Equilibria>Exercises>Q 4

Define

pH

and

pOH

. Derive relationship between

pH

and

pOH

.

EASY

12th Maharashtra Board

IMPORTANT

Chemistry Standard 12>Chapter 3 - Ionic Equilibria>Exercises>Q 4

What is meant by hydrolysis? A solution of

{CH}_{3} {COONH}_{4}

is neutral, why?

MEDIUM

12th Maharashtra Board

IMPORTANT

Chemistry Standard 12>Chapter 3 - Ionic Equilibria>Exercises>Q 4

Dissociation of

HCN

is suppressed by the addition of

HCl

. Explain.

HARD

12th Maharashtra Board

IMPORTANT

Chemistry Standard 12>Chapter 3 - Ionic Equilibria>Exercises>Q 4

Derive the relationship between degree of dissociation and dissociation constant in weak electrolytes.

HARD

12th Maharashtra Board

IMPORTANT

Chemistry Standard 12>Chapter 3 - Ionic Equilibria>Exercises>Q 4

Sulfides of cation of group II are precipitated in acidic solution

(H_{2} S + HCl)

whereas sulfides of cations of group IIIB are precipitated in ammoniacal solution of

H_{2} S

. Comment on the relative values of solubility product of sulfides of these.

MEDIUM

12th Maharashtra Board

IMPORTANT

Chemistry Standard 12>Chapter 3 - Ionic Equilibria>Exercises>Q 4

Solubility of a sparingly soluble salt get affected in presence of a soluble salt having one common ion. Explain.