Chemistry Standard 12 Vol II>Chapter 1 - Ionic Equilibrium>EVALUATION>Q 4

HARD

12th Tamil Nadu Board

IMPORTANT

Earn 100

Account for the acidic nature of ${HClO}_{4}$ in terms of Bronsted – Lowry theory, identify its conjugate base.

Important Questions on Ionic Equilibrium

HARD

12th Tamil Nadu Board

IMPORTANT

Chemistry Standard 12 Vol II>Chapter 1 - Ionic Equilibrium>EVALUATION>Q 5

When aqueous ammonia is added to

{CuSO}_{4}

solution, the solution turns deep blue due to the formation of tetramminecopper (II) complex

{[Cu {(H_{2} O)}_{4}]}_{aq}^{2 +} + 4 {NH}_{3} ⇌ {[Cu {({NH}_{3})}_{4}]}_{aq}^{2 +}

among

H_{2} O

and

{NH}_{3}

. Which is stronger Lewis base?

HARD

12th Tamil Nadu Board

IMPORTANT

Chemistry Standard 12 Vol II>Chapter 1 - Ionic Equilibrium>EVALUATION>Q 6

The concentration of hydroxide ion in a water sample is found to be

2.5 x 10^{- 6} M

. Identify the nature of the solution.

HARD

12th Tamil Nadu Board

IMPORTANT

Chemistry Standard 12 Vol II>Chapter 1 - Ionic Equilibrium>EVALUATION>Q 7

A lab assistant prepared a solution by adding a calculated quantity of

HCl

gas at

25 ° C

o to get a solution with

[H_{3} O^{+}]

= 4 x 10^{- 5} M

. Is the solution neutral (or) acidic (or) basic.

HARD

12th Tamil Nadu Board

IMPORTANT

Chemistry Standard 12 Vol II>Chapter 1 - Ionic Equilibrium>EVALUATION>Q 8

Calculate the

pH

of

0.04 M

{HNO}_{3}

solution.

HARD

12th Tamil Nadu Board

IMPORTANT

Chemistry Standard 12 Vol II>Chapter 1 - Ionic Equilibrium>EVALUATION>Q 9

Define solubility product

HARD

12th Tamil Nadu Board

IMPORTANT

Chemistry Standard 12 Vol II>Chapter 1 - Ionic Equilibrium>EVALUATION>Q 10

Define ionic product of water. Give its value at room temperature.

HARD

12th Tamil Nadu Board

IMPORTANT

Chemistry Standard 12 Vol II>Chapter 1 - Ionic Equilibrium>EVALUATION>Q 11

Explain common ion effect with an example

HARD

12th Tamil Nadu Board

IMPORTANT

Chemistry Standard 12 Vol II>Chapter 1 - Ionic Equilibrium>EVALUATION>Q 12

Derive an expression for Ostwald’s dilution law.