Equilibrium Test

Result

Equilibrium Test - 1

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

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

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

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

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

D
proportional to the vapour pressure of the gas

Solution

Explanation:

For dissolution of gases in liquids, the concentration of a gas in liquid is proportional to the pressure of the gas over the liquid
Question 2
1 / -0

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

A
mass of the solute

B
mass of the solvent

C
solubility

D
pressure

Solution

Explanation:

This is considered at equilibrium process.
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
NaCl ionises completely in water and increase in concentration of salt increases conductance.

B
Sugar releases more ions in water and increases conductance

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

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

Solution

Explanation:

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

A
vapour pressure

B
mass of a gas

C
mass of a solvent

D
solubility

Solution

Explanation:

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 5
1 / -0

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

A
open system

B
closed system

C
partially open system

D
partially closed system

Solution

Explanation:

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 6
1 / -0

The dynamic nature of chemical equilibrium can be demonstrated in the synthesis of ammonia by Haber.s process. Choose the appropriate option given below

A
by using sulphur isotope

B
by using hydrogen isotope

C
by maintaining high temperature and low pressure

D
by using deuterium isotope

Solution

Explanation:

Use of isotope (deuterium) in the formation of ammonia clearly indicates that chemical reactions reach a state of dynamic equilibrium in which the rates of forward and reverse reactions are equal and there is no net change in composition.
Question 7
1 / -0

When the soda bottle is opened, some of the dissolved carbon dioxide gas escapes because of

A
to reach a new equilibrium condition required for the higher pressure,

B
difference in solubility of carbon dioxide at different temperatures.

C
difference in solubility of carbon dioxide at different pressures.

D
some of the undissolved carbon dioxide gas in the soda bottle

Solution

Explanation:

Soda water, like other carbonated beverages, contains carbon dioxide that has dissolved under pressure. When the pressure is released by opening the soda container, the liquid cannot hold as much carbon dioxide, so the excess bubbles out of the solution. If the soda is left open, additional carbon dioxide will slowly escape into the air. Under warm conditions, the carbon dioxide leaves the solution faster.
Question 8
1 / -0

The mass of a gas dissolved in a given mass of a solvent at any temperature is proportional to the pressure of the gas above the solvent.

A
Henry’s law

B
Le Chatelier

C
Haber.s process.

D
Arrhenius

Solution

Explanation:

This equilibrium is governed by Henry’s law, which states that the mass of a gas dissolved in a given mass of a solvent at any temperature is proportional to the pressure of the gas above the solvent. This amount decreases with increase of temperature.
Question 9
1 / -0

If we place solid iodine in a closed vessel, after sometime the vessel gets filled up with violet vapour. When equilibrium is attained, the intensity of colour will be

A
no colour at all

B
increases

C
constant

D
decreases

Solution

Explanation:

we place solid iodine in a closed vessel, after sometime the vessel gets filled up with violet vapour and the intensity of colour increases with time. After certain time the intensity of colour becomes constant and at this stage equilibrium is attained. Hence solid iodine sublimes to give iodine vapour and the iodine vapour condenses to give solid iodine. The equilibrium can be represented as, I2 (solid) ⇌ I2 (vapour)
Question 10
1 / -0

the rates of transfer of molecules from ice into water and of reverse transfer from water into ice are equal at atmospheric pressure and 273 K. Both the processes occur simultaneously and at the same rate so that the amount of ice and water remains constant. This process is called

A
dynamic equilibrium

B
ionic equilibrium

C
Liquid-Vapour Equilibrium

D
Liquid-Gas Equilibrium

Solution

Explanation:

Ice and water kept in a perfectly insulated thermos flask at 273K and the atmospheric pressure are in equilibrium state and the system shows interesting characteristic features. The mass of ice and water do not change with time and the temperature remains constant. However, the equilibrium is not static. The intense activity can be noticed at the boundary between ice and water. Molecules from the liquid water collide against ice and adhere to it and some molecules of ice escape into liquid phase. There is no change of mass of ice and water, as the rates of transfer of molecules from ice into water and of reverse transfer from water into ice are equal at atmosphere pressure and 273K.

User

Question Analysis

Correct -
Wrong -
Skipped -

My Perfomance

Score
-
out of -
Rank
-
out of -

Re-Attempt Weekly Quiz Competition

Equilibrium Test - 1

Result

Equilibrium Test - 1

Score

-

Rank

-

SHARING IS CARING

Question 1

proportional to the pressure of the gas over the liquid.

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

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

proportional to the vapour pressure of the gas

Solution

Question 2

mass of the solute

mass of the solvent

solubility

pressure

Solution

Question 3

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

Sugar releases more ions in water and increases conductance

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

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

Solution

Question 4

vapour pressure

mass of a gas

mass of a solvent

solubility

Solution

Question 5

open system

closed system

partially open system

partially closed system

Solution

Question 6

by using sulphur isotope

by using hydrogen isotope

by maintaining high temperature and low pressure

by using deuterium isotope

Solution

Question 7

to reach a new equilibrium condition required for the higher pressure,

difference in solubility of carbon dioxide at different temperatures.

difference in solubility of carbon dioxide at different pressures.

some of the undissolved carbon dioxide gas in the soda bottle

Solution

Question 8

Henry’s law

Le Chatelier

Haber.s process.

Arrhenius

Solution

Question 9

no colour at all

increases

constant

decreases

Solution

Question 10

dynamic equilibrium

ionic equilibrium

Liquid-Vapour Equilibrium

Liquid-Gas 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.