Law of Mass Action, Equilibrium Constants (Kc and Kp) - Free MCQ Practice
MCQ Practice Test & Solutions: Test: Law of Mass Action, Equilibrium Constants (Kc and Kp) (15 Questions)
You can prepare effectively for JEE Chemistry for JEE Main & Advanced with this dedicated MCQ Practice Test (available with solutions) on the important topic of "Test: Law of Mass Action, Equilibrium Constants (Kc and Kp)". These 15 questions have been designed by the experts with the latest curriculum of JEE 2026, to help you master the concept.
Test Highlights:
- - Format: Multiple Choice Questions (MCQ)
- - Duration: 20 minutes
- - Number of Questions: 15
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At T( K), the equilibrium constant of H2(g) + I2(g) ⇌ 2HI(g) is 49. If [H2],[I2] at equilibrium at the same temperature are 2.0 × 10−2M and 8.0 × 10−2M respectively, the [HI] at equilibrium in molL−1 is
Detailed Solution: Question 1
For a reversible reaction, if the concentration of the reactants is reduced to half, the equilibrium constant will be.........
Detailed Solution: Question 2
is independent of initial concentrations of reactants and products. So, options (a), (b) and (c) are not correct, i.e. so, for a reversible reaction, if the concentration of the reactants is reduced to half, the equilibrium constant will be remains same.
Which among the following denotes the correct relationship between 
and 
for the reaction 
and for the reaction Detailed Solution: Question 3
is the difference of the gaseous number of moles of reactant side and product side
Kc for the reaction N2(g) + O2(g) ⇌ 2NO(g) at 300 K is 4.0 × 10−6. Kp for the above reaction will be (R = 2calmol−1 K−1)
Detailed Solution: Question 4
The equilibrium constant of the following are :
The equilibrium constant 
of the reaction :
, will be
The equilibrium constant
of the reaction :, will beDetailed Solution: Question 5
The degree of dissociation of PCl5(α) obeying the equilibrium PCl5 ⇌ PCl3 + Cl2 is related to the equilibrium pressure by
Detailed Solution: Question 6
moles of 
and 
moles of 
are mixed and allowed to attain equilibrium at 
. At equilibrium, the number of moles of 
is found to be 
mole. The equilibrium constant for the formation of 
is
moles of and moles of are mixed and allowed to attain equilibrium at . At equilibrium, the number of moles of is found to be mole. The equilibrium constant for the formation of isDetailed Solution: Question 7
For the reaction H2(g) + I2( g) ⇌ 2HI(g) at 721 K, the value of equilibrium constant is 50, when equilibrium concentration of both is 5M. Value of Kp under the same conditions will be
Detailed Solution: Question 8
For a reversible gaseous reaction 
at equilibrium, if some moles of 
are replaced by same number of moles of 
(T is tritium, isotope of 
and assume isotopes do not have different chemical properties) without affecting other parameter, then:
at equilibrium, if some moles of are replaced by same number of moles of (T is tritium, isotope of and assume isotopes do not have different chemical properties) without affecting other parameter, then:Detailed Solution: Question 9
has similar chemical properties as 
so upon mixing, 
and 
are formed.The ratio 
for the reaction 
is:
for the reaction is:Detailed Solution: Question 10
Which of the following is true at chemical equilibrium?
Detailed Solution: Question 11
Consider the expression 
and indicate the correct statement at equilibrium
and indicate the correct statement at equilibriumDetailed Solution: Question 12
If the synthesis of ammonia from Haber's process is carried out with exactly the same starting conditions (of partial pressure and temperature) but using 
(deuterium) in place of 
. Then
(deuterium) in place of . ThenDetailed Solution: Question 13
or 
reach equilibrium with the same composition, except that 
and 
are present instead of 
and 
.In which of the following reactions, the concentration of product is higher than the concentration of reactant at equilibrium? (K = equilibrium constant)
Detailed Solution: Question 14
, then [Product] > [Reactant]The increase of pressure on ice 
water system at constant temperature will lead to
water system at constant temperature will lead toDetailed Solution: Question 15
So equilibrium, will shift forward.332 videos|699 docs|300 tests |
