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

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12th Tamil Nadu Board

IMPORTANT

Earn 100

The percentage of pyridine $(C_{5} H_{5} N)$ that forms pyridinium ion $(C_{5} H_{5} {NH}^{+})$ in a $0.10 M$ aqueous pyridine solution (K_b for $(C_{5} H_{5} N)$ $= 1.7 \times 10^{9}$ ) is-

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Important Questions on Ionic Equilibrium

HARD

12th Tamil Nadu Board

IMPORTANT

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

Equal volumes of three acid solutions of

pH

1

,

2

and

3

are mixed in a vessel. What will be the

H^{+}

ion concentration in the mixture?

HARD

12th Tamil Nadu Board

IMPORTANT

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

The solubility of

AgCl

(s) with solubility product

1.6 \times 10^{- 10}

in

0.1 M

NaCl

solution would be-

HARD

12th Tamil Nadu Board

IMPORTANT

Chemistry Standard 12 Vol II>Chapter 1 - Ionic Equilibrium>EVALUATION>Q 13

If the solubility product of lead iodide is

3.2 \times 10^{- 8}

, its solubility will be-

HARD

12th Tamil Nadu Board

IMPORTANT

Chemistry Standard 12 Vol II>Chapter 1 - Ionic Equilibrium>EVALUATION>Q 14

MY

and

{NY}_{3}

are insoluble salts and have the same

K_{sp}

values of

6.2 \times 10^{- 13}

at room temperature. Which statement would be true with regard to

MY

and

{NY}_{3}

?

HARD

12th Tamil Nadu Board

IMPORTANT

Chemistry Standard 12 Vol II>Chapter 1 - Ionic Equilibrium>EVALUATION>Q 15

What is the

pH

of the resulting solution when equal volumes of

0.1 M

NaOH

and

0.01 M

HCl

are mixed?

HARD

12th Tamil Nadu Board

IMPORTANT

Chemistry Standard 12 Vol II>Chapter 1 - Ionic Equilibrium>EVALUATION>Q 16

The dissociation constant of a weak acid is 1 x 10^-3. In order to prepare a buffer solution with a

pH = 4

, the

\frac{[acid]}{[salt]}

ratio should be

HARD

12th Tamil Nadu Board

IMPORTANT

Chemistry Standard 12 Vol II>Chapter 1 - Ionic Equilibrium>EVALUATION>Q 17

The

pH of 10^{- 5} M KOH

solution will be

HARD

12th Tamil Nadu Board

IMPORTANT

Chemistry Standard 12 Vol II>Chapter 1 - Ionic Equilibrium>EVALUATION>Q 18

H_{2} {PO}_{4}^{-}

is the conjugate base of