Chemical Equilibrium Test

Result

Chemical Equilibrium Test - 9

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

In a closed system: A(s) ⇌ 2B(g) ⇌ 3C(g) if the partial pressure of C is doubled, then partial pressure of B will be

A
two times the original pressure

B
one half of its original value

C
1/2√2 times to the original value

D
2√2 times to the original value

Solution
Question 2
1 / -0

The initial pressure of COCl₂ is 1000 torr. The total pressure of the system becomes 1500 torr, when the equilibrium is attained at constant temperature.

The value of K_p of a reaction is

A
1500

B
1000

C
2500

D
500

Solution
Question 3
1 / -0

Which set can explain chemical equilibrium?

A
∆G = 0, ∆ G° ≠ 0

B
∆G ≠ 0, ∆ G° ≠ 0

C
∆G ≠ 0, ∆ G° = 0

D
∆G ≠ 0, ∆ S° ≠ 0

Solution

At equilibrium
Question 4
1 / -0

The first and second dissociation constants of an acid H₂A are 1.0 × 10^-5 and 5.0 × 10^-10 respectively. The overall dissociation constant of the acid will be

A
0.2 × 10⁵

B
5.0 × 10^-5

C
5.0 × 10⁵

D
5.0 × 10^-15

Solution
Question 5
1 / -0

The exothermic formation of CIF₃ is represented by the equation :

Which of the following will increase the quantity of CIF₃ in an equilibrium mixture of Cl_2, F₂ and CIF₃ ?

A
Adding F₂

B
Increasing the volume of the container

C
Removing Cl₂

D
Increasing the temperature

Solution

The reaction given is an exothermic reaction thus accordingly to i.e. chatalier’s principle dowering of temperature, addition of F₂ and Cl₂ yarour the forward direction and hence the production of CIF₃ .
Question 6
1 / -0

Which of the following equilibrium does not effected with the change in volume of the system?

A

B

C

D

Solution

In the nitric oxide formation reaction, both the reactants and the product possessequal moles. Hence, change in volume does not affect the equilibrium of reaction.
Question 7
1 / -0

A saturated solution of iodine in water is 1.25 × 10–3 (M). In any saturated solution of l₂ concentration of l₂ is 1.25 × 10^–3 (M). In 1 L of 0.1 (M) solution I^– , it is seen 51.25 × 10^–3 mole of l₂ can be maximum dissolved. In the aqueous solution of l^– (aq), l₂ (ag) undergoes complex formation,

What is the value of K_C ?

A
750

B
800

C
1000/51.25

D
1

Solution
Question 8
1 / -0

The percentage of ammonia obtainable, if equilibrium were to be established during the Haber process, is plotted against the operating pressure for two temperatures, 400ºC and 500ºC. Which of the following graph correctly represent the two process?

A

B

C

D

Solution

By Le-Chatelier principle, higher pressure and lower temperature favour the forward reaction, i.e., higher % of NH₃ .
Question 9
1 / -0

Dissociation constants of CH₃COOH and NH₄OH are 1.8 × 10^-5 each at 25°C. The equilibrium constant for the reaction of CH₃COOH and NH₄OH will be:

A
1.8×1.8 / 10⁴

B
1.8/10^-9

C
1.8×1.8×10⁴

D
3.24 × 10^-10

Solution
Question 10
1 / -0

In an aqueous solution of volume 500 ml, when the reaction of reached equilibrium the [Cu⁺²] was x M. When 500 ml of water is further added, at the equilibrium [Cu⁺²] will be

A
2 xM

B
x M

C
between x M and x/2 M

D
less than x/2 M

Solution

∴ Reaction go backward and concentration of [Cu⁺²] < x / 2