Relation between Kp, degree of dissociation and total pressure for a gas dissociation
This type of question, asked 7 times: 14 Jun 2022, 31 Jan 2024, 23 Jan 2025, 29 Jan 2025, 2 Apr 2025, 23 Jan 2026 S1, 5 Apr 2026 S2. All 7 questions below, oldest first.
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Question 1
14 Jun 2022
34
For a reaction at equilibrium
A(g)⇌B(g)+21C(g)
the relation between dissociation constant (K), degree of dissociation (α) and equilibrium pressure (p) is given by:
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Question 2
31 Jan 2024
131
A(g)⇌B(g)+21C(g). The correct relationship between KP, α and equilibrium pressure P is
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Question 3
23 Jan 2025
105
Consider the reaction
X2Y(g)⇌X2(g)+21Y2(g)
The equation representing correct relationship between the degree of dissociation ( x ) of X2Y(g) with its equilibrium constant Kp is _____ . Assume x to be very very small.
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Question 4
29 Jan 2025
29
At temperature T , compound AB2(g) dissociates as AB2(g)⇌AB(g)+21B2(g) having degree of dissociation x (small compared to unity). The correct expression for x in terms of Kp and p is
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Question 5
2 Apr 2025
117
Consider the following chemical equilibrium of the gas phase reaction at a constant temperature : A(g)⇌B(g)+C(g).If p being the total pressure, Kp is the pressure equilibrium constant and α is the degree of dissociation, then which of the following is true at equilibrium ?
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Question 6
23 Jan 2026 S1
47
For the following gas phase equilibrium reaction at constant temperature,
NH3(g)⇌21N2(g)+23H2(g)
If the total pressure is 3atm and the pressure equilibrium constant (Kp) is 9 atm , then the degree of dissociation is given as (x×10−2)−1/2. The value of x is ____ (Nearest integer)
Question 7
5 Apr 2026 S2
31
The reaction A(g)⇌B(g)+C(g) was initiated with the amount ' a ' of A(g). At equilibrium it is found that the amount of A(g) remaining is (a−x) at a total pressure of p. The equilibrium constant Kp of the reaction can be calculated from the expression :