Equilibrium Test

Result

Equilibrium Test - 3

Score
-
out of -
Rank
-
out of -

TIME Taken - -

SHARING IS CARING

If our Website helped you a little, then kindly spread our voice using Social Networks. Spread our word to your readers, friends, teachers, students & all those close ones who deserve to know what you know now.

Weekly Quiz Competition

Question 1
1 / -0

At a given temperature equilibrium is possible only in a system which is a

A
partially closed system

B
open system

C
closed system

D
partially open system

Solution

Equilibrium is possible only in a closed system at a given temperature for physical processes. When equilibrium is attained for a physical process, it is characterized by constant value of one of its parameters at a given temperature.
Question 2
1 / -0

For liquid ⇌ vapour equilibrium, at a given temperature, the constant is

A
mass of a solvent

B
mass of a gas

C
solubility

D
vapour pressure

Solution

The vapour pressure is constant at a given temperature for liquid ⇌ vapour equilibrium. The equilibrium vapour pressure of a compound at a given temperature is an intrinsic property of the compound, meaning it does not depend on variables like volume, quantity of the compound, etc.
Question 3
1 / -0

The aqueous solution of sugar does not conduct electricity. However, when sodium chloride is added to water, it conducts electricity. How will you explain this statement on the basis of ionisation and how is it affected by concentration of sodium chloride?

A
Sugar releases more ions in water and increases conductance

B
NaCl ionises completely in water and increase in concentration of salt increases conductance.

C
Both sugar and NaCl ionises partially in water thereby increasing the conductance

D
Both sugar and NaCl ionises completely in water thereby increasing the conductance

Solution

Sugar being a non-electroyte, does not ionize in water, whereas NaCl ionizes completely in water and produce Na⁺ and Cl^- ions, which help in the conduction of electricity and when concentration of NaCl is increased , more Na⁺ and Cl^- ions will be produced, hence conductance increases.
Question 4
1 / -0

For dissolution of solids in liquids, at a given temperature, the constant is

A
solubility

B
pressure

C
mass of the solvent

D
mass of the solute

Solution

It is because at a particular temperature only a certain amount of solute can be dissolved. But it may be increased after increasing the temperature, so the solubility is constant at a given temperature.
Question 5
1 / -0

For dissolution of gases in liquids, the concentration of a gas in liquid is.

A
proportional to the vapour pressure of the gas

B
lower to the pressure of the gas as compared to the liquid

C
equal to the pressure of the gas in relation to the liquid

D
proportional to the pressure of the gas over the liquid.

Solution

For dissolution of gases in liquids, Henry's Law is applicable i.e. the mass of the gas dissolved in a given solvent at any temperature is proportional to the pressure of the gas above the solvent.
Question 6
1 / -0

the concentrations in an equilibrium mixture are related by the following equilibrium equation, K_c = [C][D] / [A][B] Where Kc is called as

A
reaction quotient

B
active mass constant

C
molecular constant

D
equilibrium constant

Solution

Let us consider a general reversible reaction:
A + B ⇌ C + D
where A and B are the reactants, C and D are the products in the balanced chemical equation. A + B ⇌ C + D
On the basis of experimental studies of many reversible reactions, oposed in 1864 that the concentrations in an equilibrium mixture are related by the following equilibrium equation, Kc = [C] [D] /[A] [B]
Where Kc is the equilibrium constant and the expression on the right side is called the equilibrium constant expression
Question 7
1 / -0

If the Kc is neither too small nor too large, one of the following will happen

A
reaction proceeds to completion

B
reaction hardly proceeds

C
reaction proceeds very slowly.

D
both reactants and products are at equilibrium

Solution

A High value of K is high concentration of products.

If Kc > 10³ , products predominate over reactants,

• If Kc < 10^–3, reactants predominate over products, i.e., if Kc is very small, the reaction proceeds rarely.
• If Kc is in the range of 10^{– 3} to 10³ , appreciable concentrations of both reactants and products are present.

User

Question Analysis

Correct -
Wrong -
Skipped -

My Perfomance

Score
-
out of -
Rank
-
out of -

Re-Attempt Weekly Quiz Competition

Equilibrium Test - 3

Result

Equilibrium Test - 3

Score

-

Rank

-

SHARING IS CARING

Question 1

partially closed system

open system

closed system

partially open system

Solution

Question 2

mass of a solvent

mass of a gas

solubility

vapour pressure

Solution

Question 3

Sugar releases more ions in water and increases conductance

NaCl ionises completely in water and increase in concentration of salt increases conductance.

Both sugar and NaCl ionises partially in water thereby increasing the conductance

Both sugar and NaCl ionises completely in water thereby increasing the conductance

Solution

Question 4

solubility

pressure

mass of the solvent

mass of the solute

Solution

Question 5

proportional to the vapour pressure of the gas

lower to the pressure of the gas as compared to the liquid

equal to the pressure of the gas in relation to the liquid

proportional to the pressure of the gas over the liquid.

Solution

Question 6

reaction quotient

active mass constant

molecular constant

equilibrium constant

Solution

Question 7

reaction proceeds to completion

reaction hardly proceeds

reaction proceeds very slowly.

both reactants and products are at equilibrium

Solution

User

Question Analysis

My Perfomance

Score

-

Rank

-

Results Announcement on: coming Monday

Stay Tuned: We’ll update you on your result via email or SMS.