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Chemistrysolutions2025easy

Which of the following properties will change when system containing solution 1 will become solution 2 ?

Chemistrysolutions2025medium

Given below are two statements: Statement (I) : Molal depression constant

K_{f}

is given by

\frac{M _{1} RT _{f}}{Δ S _{fus}}

, where symbols have their usual meaning. Statement (II) :

K_{f}

for benzene is less than the

K_{f}

for water. In the light of the above statements, choose the most appropriate answer from the options given below :

Chemistrysolutions2025easy

Liquid A and B form an ideal solution. The vapour pressures of pure liquids A and B are 350 and 750 mm Hg respectively at the same temperature. If

x_{A}

and

x_{B}

are the mole fraction of A and B in solution while

y_{A}

and

y_{B}

are the mole fraction of A and B in vapour phase, then,

Chemistrysolutions2025easy

Match List - I with List - II. List - I List - II (A) Solution of chloroform and acetone (I) Minimum boiling azeotrope (B) Solution of ethanol and water (II) Dimerizes (C) Solution of benzene and toluene (III) Maximum boiling azeotrope (D) Solution of acetic acid in benzene (IV) ΔVmix = 0 Choose the correct answer from the options given below :

Chemistrysolutions2025easy

$X Y$ is the membrane/partition between two chambers 1 and 2 containing sugar solutions of concentration

c_{1}

and

c_{2} (c_{1} > c_{2}) mol L^{- 1}

. For the reverse osmosis to take place identify the correct condition. (Here

p_{1}

and

p_{2}

are pressures applied on chamber 1 and 2 ). A. Membrane/Partition : Cellophane,

p_{1} > π

B. Membrane/Partition : Porous,

p_{2} > π

C. Membrane/Partition : Parchment paper,

p_{1} > π

D. Membrane/Partition : Cellophane,

p_{2} > π

Choose the correct answer from the option given below:

Chemistrychemical-equilibrium2025medium

Consider the equilibrium

CO (g) + 3 H_{2} (g) ⇌ CH_{4} (g) + H_{2} O (g)

If the pressure applied over the system increases by two fold at constant temperature then (A) Concentration of reactants and products increases. (B) Equilibrium will shift in forward direction. (C) Equilibrium constant increases since concentration of products increases. (D) Equilibrium constant remains unchanged as concentration of reactants and products remain same. Choose the correct answer from the options given below :

Chemistrychemical-equilibrium2025medium

At temperature T, compound

A B_{2 (g)}

dissociates as

A B_{2 (g)} ⇌ A B_{(g)} + \frac{1}{2} B_{2 (g)}

having degree of dissociation $ x $ (small compared to unity). The correct expression for $ x $ in terms of

K_{p}

and $ p $ is:

Chemistrychemical-equilibrium2025easy

A vessel at 1000 K contains

CO_{2}

with a pressure of 0.5 atm . Some of

CO_{2}

is converted into CO on addition of graphite. If total pressure at equilibrium is 0.8 atm , then Kp is :

Chemistrychemical-equilibrium2025medium

Consider the reaction

X_{2} Y (g) ⇌ X_{2} (g) + \frac{1}{2} Y_{2} (g)

The equation representing correct relationship between the degree of dissociation (x) of

X_{2} Y (g)

with its equilibrium constant Kp is __________. Assume $x$ to be very very small.

Chemistrychemical-equilibrium2025easy

For the reaction,

H_{2} (g) + I_{2} (g) ⇌ 2 HI (g)

Attainment of equilibrium is predicted correctly by :

Chemistrychemical-equilibrium2025medium

Consider the following chemical equilibrium of the gas phase reaction at a constant temperature :

A (g) ⇌ B (g) + C (g)

If $p$ being the total pressure,

K_{p}

is the pressure equilibrium constant and

α

is the degree of dissociation, then which of the following is true at equilibrium?

Chemistrychemical-equilibrium2025medium

In the following system,

PCl_{5} (g) ⇋ PCl_{3} (g) + Cl_{2} (g)

at equilibrium, upon addition of xenon gas at constant T \& p , the concentration of

Chemistrychemical-equilibrium2025easy

Given below are two statements : Statement I : A catalyst cannot alter the equilibrium constant

(K_{c})

of the reaction, temperature remaining constant. Statement II : A homogenous catalyst can change the equilibrium composition of a system, temperature remaining constant. In the light of the above statements, choose the correct answer from the options given below