EMBIBE CHAPTER WISE PREVIOUS YEAR PAPERS FOR CHEMISTRY>Chapter 5 - Equilibrium>JEE Main 16 March 2021 Shift 2>Q 8

HARD

JEE Main

IMPORTANT

Earn 100

Sulphurous acid $(H_{2} {SO}_{3})$ has ${Ka}_{1} = 1.7 \times 10^{- 2}$ and ${Ka}_{2} = 6.4 \times 10^{- 8} .$ The $pH$ of $0.588 M H_{2} {SO}_{3}$ is____________ $($ Round off to the Nearest Integer $)$ .

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Important Questions on Equilibrium

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JEE Main

IMPORTANT

EMBIBE CHAPTER WISE PREVIOUS YEAR PAPERS FOR CHEMISTRY>Chapter 5 - Equilibrium>JEE Main 16 March 2021 Shift 1>Q 9

Two salts $A_{2} X$ and $MX$ have the same value of solubility product of $4.0 \times 10^{- 12}$ . The ratio of their molar solubilizes i.e. $\frac{S (A_{2} X)}{S (MX)} =$ ________.

(Round off to the Nearest Integer).

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JEE Main

IMPORTANT

EMBIBE CHAPTER WISE PREVIOUS YEAR PAPERS FOR CHEMISTRY>Chapter 5 - Equilibrium>JEE Main - 9th January 2020 Shift 2>Q 10

The solubility product of

C r {(O H)}_{3}

at

298 K

is

6.0 \times 10^{- 31} .

The concentration of hydroxide ions in a saturated solution of

C r {(O H)}_{3}

will be

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IMPORTANT

EMBIBE CHAPTER WISE PREVIOUS YEAR PAPERS FOR CHEMISTRY>Chapter 5 - Equilibrium>JEE Main - 9th January 2020 Shift 2>Q 11

In the figure shown below reactant

A

(represented by square) is in equilibrium with product

B

(represented by circle). The equilibrium constant is (approx):

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JEE Main

IMPORTANT

EMBIBE CHAPTER WISE PREVIOUS YEAR PAPERS FOR CHEMISTRY>Chapter 5 - Equilibrium>JEE Main - 9th January 2020 Shift 1>Q 12

The

K_{s p}

for the following dissociation is

1.6 \times 10^{- 5}

{P b C l}_{2 (s)} ⇌ P b_{(a q)}^{2 +} + 2 C l_{(a q)}^{-}

Which of the following choices is correct for a mixture of

300 mL, 0 .134 M Pb {({NO}_{3})}_{2}

and

100 m L,

0.4 M N a C l ?

EASY

JEE Main

IMPORTANT

EMBIBE CHAPTER WISE PREVIOUS YEAR PAPERS FOR CHEMISTRY>Chapter 5 - Equilibrium>JEE Main - 9th January 2019 Shift 2>Q 13

Consider the following reversible chemical reactions:

A_{2} (g) + B_{2} (g) \overset{k_{1}}{⇌} 2 A B (g)

.....(1)

6 A B (g) \overset{k_{2}}{⇌} 3 A_{2} (g) + 3 B_{2} (g)

.....(2)

The relation between

K_{1}

and

K_{2}

is:

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JEE Main

IMPORTANT

EMBIBE CHAPTER WISE PREVIOUS YEAR PAPERS FOR CHEMISTRY>Chapter 5 - Equilibrium>JEE Main - 9th January 2019 Shift 1>Q 14

20 ml

of

{0.1 M H}_{2} {SO}_{4}

solution is added to

30 mL

of

0 .2 M {NH}_{4} OH

solution. The

pH

of the resultant mixture is:

[{pk}_{b} of {NH}_{4} OH = 4 .7]

HARD

JEE Main

IMPORTANT

EMBIBE CHAPTER WISE PREVIOUS YEAR PAPERS FOR CHEMISTRY>Chapter 5 - Equilibrium>JEE Main - 9th April 2019 Shift 2>Q 15

In an acid-base titration,

0.1 M H C l

solution was added to the

N a O H

solution of unknown strength. Which of the following correctly shown the change of

p H

of the titration mixture in this experiment?
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JEE Main

IMPORTANT

EMBIBE CHAPTER WISE PREVIOUS YEAR PAPERS FOR CHEMISTRY>Chapter 5 - Equilibrium>JEE Main - 9th April 2017>Q 16

50 mL

of

0 .2 M

ammonia solution is treated with

25 mL of 0.2 M HCl

. If

{pK}_{b}

of ammonia solution is

4.75

, the

pH

of the mixture will be: