Equilibrium Involving Chemical Processes (Law of Chemical Equilibrium, Equilibrium Constants,...) NEET Questions

Physical Chemistry - Equilibrium

Equilibrium Involving Chemical Processes (Law of Chemical Equilibrium, Equilibrium Constants,...) MCQ Questions


1.
What is the equilibrium constant expression for the reaction N₂ + 3H₂ ⇌ 2NH₃?
A.
[NH₃]² / ([N₂][H₂]³)
B.
[N₂][H₂]³ / [NH₃]²
C.
[NH₃] / ([N₂][H₂])³
D.
[N₂]² / ([NH₃][H₂]³)
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ANSWER :
A. [NH₃]² / ([N₂][H₂]³)
2.
Which factor can change the equilibrium constant (K) of a reaction?
A.
Pressure
B.
Temperature
C.
Concentration
D.
Catalyst
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ANSWER :
B. Temperature
3.
Le Chatelier’s principle predicts that an increase in temperature for an endothermic reaction will
A.
Shift equilibrium to the right
B.
Shift equilibrium to the left
C.
Have no effect
D.
Increase reactant concentration
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ANSWER :
A. Shift equilibrium to the right
4.
If the equilibrium constant (Kc) for a reaction is very large, it indicates:

NEET - 2023

A.
Reaction favors reactants
B.
Reaction favors products
C.
Reaction is slow
D.
Reaction is at equilibrium
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ANSWER :
B. Reaction favors products
5.
A catalyst increases the rate of a reaction by
A.
Shifting equilibrium to the right
B.
Shifting equilibrium to the left
C.
Increasing the activation energy
D.
Lowering the activation energy
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ANSWER :
D. Lowering the activation energy
6.
In a gaseous equilibrium, increasing pressure will shift the reaction toward
A.
The side with more moles of gas
B.
The side with fewer moles of gas
C.
No effect
D.
Always favor reactants
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ANSWER :
B. The side with fewer moles of gas