Chemistry Crash Course NEET>Chapter 5 - Equilibrium>Level 1>Q 14

EASY

NEET

IMPORTANT

Earn 100

The solubility curve of ${KNO}_{3}$ in water is shown below:

The amount of ${KNO}_{3}$ that dissolves in $50 g$ of water at $40 ° C$ is closest to:

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Important Questions on Equilibrium

MEDIUM

NEET

IMPORTANT

Chemistry Crash Course NEET>Chapter 5 - Equilibrium>Level 1>Q 15

An aqueous buffer is prepared by adding

100 ml

of

0.1 mol L^{- 1}

Acetic acid to

50 ml

of

0.2 mol L^{- 1}

of Sodium acetate. If

pKa

of acetic acid is

4.76

, the

pH

of the buffer is:

MEDIUM

NEET

IMPORTANT

Chemistry Crash Course NEET>Chapter 5 - Equilibrium>Level 1>Q 16

The

{pK}_{a}

of a weak acid is

5.85

. The concentrations of the acid and its conjugate base are equal at a

pH

of:

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NEET

IMPORTANT

Chemistry Crash Course NEET>Chapter 5 - Equilibrium>Level 1>Q 17

In a reaction

A + B ⇌ C + D

, the rate constant of forward reaction & backward reaction is

K_{1}

and

K_{2}

. Then, the equilibrium constant

(K)

for the reaction is expressed as:

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NEET

IMPORTANT

Chemistry Crash Course NEET>Chapter 5 - Equilibrium>Level 1>Q 18

The equilibrium concentration of

{[B]}_{eq}

for the reversible reaction

A ⇌ B

can be evaluated by the expression:

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NEET

IMPORTANT

Chemistry Crash Course NEET>Chapter 5 - Equilibrium>Level 1>Q 19

In a chemical equilibrium, the rate constant for the backward reaction is

7.5 \times 10^{- 4}

and the equilibrium constant is

1.5

. The rate constant for the forward reaction is:

HARD

NEET

IMPORTANT

Chemistry Crash Course NEET>Chapter 5 - Equilibrium>Level 1>Q 20

For the reaction:

${CuSO}_{4} \cdot 5 H_{2} O (s) ⇌ {CuSO}_{4} \cdot 3 H_{2} O (s) + 2 H_{2} O (g)$

Which one is correct representation?

EASY

NEET

IMPORTANT

Chemistry Crash Course NEET>Chapter 5 - Equilibrium>Level 1>Q 21

For a reaction $N_{2} + 3 H_{2} ⇌ 2 {NH}_{3}$ , the value of $K_{C}$ does not depend upon:

$(a)$ Initial concentration of the reactants

$(b)$ Pressure

$(c)$ Temperature

$(d)$ catalyst

MEDIUM

NEET

IMPORTANT

Chemistry Crash Course NEET>Chapter 5 - Equilibrium>Level 1>Q 22

At

1000 K

, the value of

K_{p}

for the reaction:

A (g) + 2 B (g) ⇌ 3 C (g) + D (g)

is

0.05

atmosphere. The value of

K_{C}

in terms of

R

would be: