Chapterwise/Topicwise Daily Practice Problems (DPP) Physical Chemistry Part 1 JEE Main & Advanced>Chapter 7 - Ionic Equilibrium>DPP 7.1>Q 15

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IMPORTANT

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If $K_{a 1}$ and $K_{a 2}$ of $H_{2} {SO}_{4}$ are $10^{- 2}$ and $10^{- 6}$ , respectively then,

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Important Questions on Ionic Equilibrium

HARD

JEE Main

IMPORTANT

Chapterwise/Topicwise Daily Practice Problems (DPP) Physical Chemistry Part 1 JEE Main & Advanced>Chapter 7 - Ionic Equilibrium>DPP 7.1>Q 16

K_{a}

values for

HA, HB

and

HD

are

10^{- 5}, 10^{- 7}

and

10^{- 9}

, respectively. Which of the following will be correct for decimolar aqueous solutions of

NaA, NaB

, and

NaD

a

25 ° C

?

HARD

JEE Main

IMPORTANT

Chapterwise/Topicwise Daily Practice Problems (DPP) Physical Chemistry Part 1 JEE Main & Advanced>Chapter 7 - Ionic Equilibrium>DPP 7.2>Q 1

The average concentration of

{SO}_{2}

in the atmosphere over a city on a certain day is

10 ppm

, when the average temperature is

298 K

. Given that the solubility of

{SO}_{2}

in water at

298 K

is

1.3653

moles {litre}^{- 1}

and

{pK}_{a}

of

H_{2} {SO}_{3}

is

1.92

, estimate the

pH

of rain on that day.

MEDIUM

JEE Main

IMPORTANT

Chapterwise/Topicwise Daily Practice Problems (DPP) Physical Chemistry Part 1 JEE Main & Advanced>Chapter 7 - Ionic Equilibrium>DPP 7.2>Q 2

Percentage ionization of water at certain temperature is

3.6 \times 10^{- 7} %

. Calculate

K_{w}

and

pH

of water.

MEDIUM

JEE Main

IMPORTANT

Chapterwise/Topicwise Daily Practice Problems (DPP) Physical Chemistry Part 1 JEE Main & Advanced>Chapter 7 - Ionic Equilibrium>DPP 7.2>Q 3

Calculate the $pH$ of the resulting solution formed by mixing the following solutions:

$20 mL$ of $0.2 M Ca (OH)_{2} + 25 mL$ $0.1 M HCl$

EASY

JEE Main

IMPORTANT

Chapterwise/Topicwise Daily Practice Problems (DPP) Physical Chemistry Part 1 JEE Main & Advanced>Chapter 7 - Ionic Equilibrium>DPP 7.2>Q 3

Calculate the $pH$ of the resulting solution formed by mixing the following solutions:

$10 mL$ of $0.01 M H_{2} {SO}_{4} + 10 mL$ of $0.01 M Ca (OH)_{2}$

EASY

JEE Main

IMPORTANT

Chapterwise/Topicwise Daily Practice Problems (DPP) Physical Chemistry Part 1 JEE Main & Advanced>Chapter 7 - Ionic Equilibrium>DPP 7.2>Q 3

Calculate the $pH$ of the resulting solution formed by mixing the following solutions:

$10 mL$ of $0.1 M H_{2} {SO}_{4} + 10 mL$ of $0.1 M KOH$

MEDIUM

JEE Main

IMPORTANT

Chapterwise/Topicwise Daily Practice Problems (DPP) Physical Chemistry Part 1 JEE Main & Advanced>Chapter 7 - Ionic Equilibrium>DPP 7.2>Q 4

A

1

litre solution of

pH = 6

(solution of a strong acid) is added to the

7 / 3

litre of water. What is the

pH

of resulting solution

(\log 2 = 0.3)

? (Neglect the common ion effect on

H_{2} O

)

HARD

JEE Main

IMPORTANT

Chapterwise/Topicwise Daily Practice Problems (DPP) Physical Chemistry Part 1 JEE Main & Advanced>Chapter 7 - Ionic Equilibrium>DPP 7.2>Q 5

Calculate

K_{a}

for a monobasic acid whose

0.10 M

solution has

pH

of

4.52 (\log 3 = 0.48)

.