MEDIUM

Earn 100

The value of ${pK}_{w}$ of water:

78.57% studentsanswered this correctly

Important Questions on Equilibrium

MEDIUM

Chemistry>Physical Chemistry>Equilibrium>Ionic Product of Water

How many litres of water must be added to

1

litre of aqueous solution of

HCl

with a pH of

1

to create an aqueous solution with pH of

2

EASY

Chemistry>Physical Chemistry>Equilibrium>Ionic Product of Water

The number of

H^{+}

ions present in

1 mL

of a solution whose

pH

13

EASY

Chemistry>Physical Chemistry>Equilibrium>Ionic Product of Water

Two solutions $A$ and $B$ have $pH$ $3$ and $6$ respectively. Which of the following statement is correct ?

MEDIUM

Chemistry>Physical Chemistry>Equilibrium>Ionic Product of Water

The

pH

of a solution increase from

1

2

. The concentration of

H^{+}

ion

HARD

Chemistry>Physical Chemistry>Equilibrium>Ionic Product of Water

For the following Assertion and Reason, the correct option is:
Assertion: The

p H

of water increases with increase in temperature.
Reason: The dissociation of water into

H^{+}

and

O H^{-}

is an exothermic reaction.

EASY

Chemistry>Physical Chemistry>Equilibrium>Ionic Product of Water

Three solutions

P, Q

and

R

have

pH

value of

3.5, 5.2

and

12.2

respectively. Which one of these is a strong alkali?

MEDIUM

Chemistry>Physical Chemistry>Equilibrium>Ionic Product of Water

The hydroxyl ion concentration in a solution having

pH

value

3

will be

EASY

Chemistry>Physical Chemistry>Equilibrium>Ionic Product of Water

A solution turns red litmus blue, its pH is likely to be:

EASY

Chemistry>Physical Chemistry>Equilibrium>Ionic Product of Water

The

pH

of pure water at

80 ° C

EASY

Chemistry>Physical Chemistry>Equilibrium>Ionic Product of Water

A solution turns red litmus blue. Its

p H

is likely to be

MEDIUM

Chemistry>Physical Chemistry>Equilibrium>Ionic Product of Water

The hydrogen ion concentration of a solution with

pH

value

3.69

is given by

EASY

Chemistry>Physical Chemistry>Equilibrium>Ionic Product of Water

The

pH

of pure water at

90 {}^{\circ}C

will be

EASY

Chemistry>Physical Chemistry>Equilibrium>Ionic Product of Water

The pH value of acidic solution is-

EASY

Chemistry>Physical Chemistry>Equilibrium>Ionic Product of Water

Three solutions

P, Q

and

R

have

pH

value of

3.5, 5.2

and

12.2

respectively. Which one of these is a weak acid?

EASY

Chemistry>Physical Chemistry>Equilibrium>Ionic Product of Water

The pH of a solution is 7. This solution will be-

MEDIUM

Chemistry>Physical Chemistry>Equilibrium>Ionic Product of Water

A solution turns red litmus into blue, its pH is likely to be

EASY

Chemistry>Physical Chemistry>Equilibrium>Ionic Product of Water

The concentration of hydrogen ion in a sample of soft drink is

3.8 \times 10^{- 4} M

. What is its

pH

EASY

Chemistry>Physical Chemistry>Equilibrium>Ionic Product of Water

If the

H^{+}

concentration of an aqueous solution is

0.001 M,

, then the

pOH

of the solution would be

HARD

Chemistry>Physical Chemistry>Equilibrium>Ionic Product of Water

298 K,

the ratio of dissociated water to that of undissociated water is [Assume pure water]

EASY

Chemistry>Physical Chemistry>Equilibrium>Ionic Product of Water

Which of the following equations give ionic product of water?

(i) ${NH}_{3 (aq)} + H_{2} O ⇆ {NH}_{4 (aq)}^{+} + {OH}_{(aq)}^{-}$

(ii) ${NH}_{4 (aq)}^{+} + H_{2} O ⇆ H_{3} O^{+} + {NH}_{3 (aq)}$

(iii) ${NH}_{2 (aq)}^{-} + H_{2} O ⇆ {NH}_{3 (aq)} + {OH}^{-}$

(iv) ${NH}_{3 (aq)} + {OH}_{(aq)}^{-} ⇆ {NH}_{2 (aq)}^{-} + H_{2} O$

The value of pKw​ of water:

Important Questions on Equilibrium

Learn and Prepare for any exam you want !

The value of ${pK}_{w}$ of water: