Pradeep's Chemistry Vol 1>Chapter 9 - Ionic Equilibrium in Solution>Competition Focus>Q 47

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11th CBSE

IMPORTANT

Earn 100

Aspirin (acetylsalicylic acid, molar mass $= 180 g {mol}^{- 1}$ ) used as an analgesic has ${pK}_{a}$ value of $2$ . Two tablets of aspirin, each weighing $90 mg$ , are dissolved in $100 mL$ of water. The $pH$ of the solution is

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Important Questions on Ionic Equilibrium in Solution

MEDIUM

11th CBSE

IMPORTANT

Pradeep's Chemistry Vol 1>Chapter 9 - Ionic Equilibrium in Solution>Competition Focus>Q 48

The

pH

of a solution obtained by mixing

50 mL

of

0.2 M HCl

with

50 mL

of

0.20 M {CH}_{3} COOH

is

MEDIUM

11th CBSE

IMPORTANT

Pradeep's Chemistry Vol 1>Chapter 9 - Ionic Equilibrium in Solution>Competition Focus>Q 49

The hydrogen ion concentration of a

10^{- 8} M

HCl

aqueous solution at

298 K (K_{w} = 10^{- 14})

is

MEDIUM

11th CBSE

IMPORTANT

Pradeep's Chemistry Vol 1>Chapter 9 - Ionic Equilibrium in Solution>Competition Focus>Q 50

$40 mL$ of $0.1 M$ ammonia solution is mixed with $20 mL$ of $0.1 M HCl$ . What is the $pH$ of the mixture? $({pK}_{b}$ of ammonia solution is $4.74)$ .

Note: Question is modified based on the data.

MEDIUM

11th CBSE

IMPORTANT

Pradeep's Chemistry Vol 1>Chapter 9 - Ionic Equilibrium in Solution>Competition Focus>Q 51

10^{- 6} M

NaOH

is diluted

100

times. The

pH

of this diluted base is

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11th CBSE

IMPORTANT

Pradeep's Chemistry Vol 1>Chapter 9 - Ionic Equilibrium in Solution>Competition Focus>Q 52

0.023 g

of sodium metal is reacts with

100 {cm}^{3}

of water. The

pH

of the resulting solution is

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11th CBSE

IMPORTANT

Pradeep's Chemistry Vol 1>Chapter 9 - Ionic Equilibrium in Solution>Competition Focus>Q 53

0.1 M HCl

and

0.1 M H_{2} {SO}_{4}

, each of volume

2 mL

are mixed and the volume is made up to

6 mL

by adding

2 mL

of

0.01 N NaCl

solution. The

pH

of the resulting mixture is

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11th CBSE

IMPORTANT

Pradeep's Chemistry Vol 1>Chapter 9 - Ionic Equilibrium in Solution>Competition Focus>Q 54

The

pH

of the solution produced by mixing equal volumes of

2.0 \times 10^{- 3} M {HClO}_{4}

and

1.0 \times 10^{- 2} M {KClO}_{4}

is

MEDIUM

11th CBSE

IMPORTANT

Pradeep's Chemistry Vol 1>Chapter 9 - Ionic Equilibrium in Solution>Competition Focus>Q 55

pH

value of which of the following is NOT equal to one?