ALL IN ONE ISC Chemistry CLASS 11>Chapter 7 - Equilibrium>Chapter Practice>Q 10

HARD

11th ICSE

IMPORTANT

Earn 100

Explain the effect of temperature on a system at equilibrium.

Important Questions on Equilibrium

HARD

11th ICSE

IMPORTANT

ALL IN ONE ISC Chemistry CLASS 11>Chapter 7 - Equilibrium>Chapter Practice>Q 11

Write expressions for

K_{p}

and

K_{c}

for the decomposition reaction of calcium carbonate.

HARD

11th ICSE

IMPORTANT

ALL IN ONE ISC Chemistry CLASS 11>Chapter 7 - Equilibrium>Chapter Practice>Q 12

Comment on the statement, “Even acids solution contains

{OH}^{-}

ions and even a basic solution contains

H^{+}

ions”.

HARD

11th ICSE

IMPORTANT

ALL IN ONE ISC Chemistry CLASS 11>Chapter 7 - Equilibrium>Chapter Practice>Q 13

0.049 g

of

H_{2} {SO}_{4}

is dissolved per litre of the given solution. Calculate the

pH

of the solution.

HARD

11th ICSE

IMPORTANT

ALL IN ONE ISC Chemistry CLASS 11>Chapter 7 - Equilibrium>Chapter Practice>Q 14

Write the conjugate acid for

{NH}_{2}^{-}

and

{NH}_{3}

.

HARD

11th ICSE

IMPORTANT

ALL IN ONE ISC Chemistry CLASS 11>Chapter 7 - Equilibrium>Chapter Practice>Q 14

What is the relationship between

{pK}_{a}

and

{pK}_{b}

values?

HARD

11th ICSE

IMPORTANT

ALL IN ONE ISC Chemistry CLASS 11>Chapter 7 - Equilibrium>Chapter Practice>Q 15

The value of

K_{w}

is

9.55 \times 10^{- 14}

at a certain temperature. Calculate the

pH

of water of this temperature. How is the value of

K_{w}

affected with change in temperature?

HARD

11th ICSE

IMPORTANT

ALL IN ONE ISC Chemistry CLASS 11>Chapter 7 - Equilibrium>Chapter Practice>Q 16

Calculate the

pH

of

0.1 M

ammonium acetate at

25 C . K_{a} = K_{b} = 1.8 \times 10^{- 5} .

HARD

11th ICSE

IMPORTANT

ALL IN ONE ISC Chemistry CLASS 11>Chapter 7 - Equilibrium>Chapter Practice>Q 17

Two moles of

{PCl}_{5}

were heated to

327 ° C

in a closed two litre vessels and when equilibrium was achieved,

{PCl}_{5}

was found to be

40 %

dissociated into

{PCl}_{3}

and

{Cl}_{2}

. Calculate the equilibrium constant for this reaction.