Home Chemistry Chemical Kinetics JEE Main 2023 A(g) 2 B( g) + C(g) is a first order reacti…
Chemistry Chemical Kinetics JEE Main 2023 Numeric Response
Published on: August 14, 2026

A(g) 2 B( g) + C(g) is a first order reaction. The initial pressure of the system was found to be 800 mm Hg which increased to 1600 mm Hg after 10 min . The total pressure of the system after 30 min will be mm Hg. (Nearest integer)

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Verified by Experts
The correct answer is:
2200

(2200)

The final pressure of each component can be calculated as follows,

A(g) 2 B(g) + C(g)

intial 800 0 0

At time = t 800 - p 2p p

800 + 2p = 1600

2P =800

p= 400

The first order reaction rate constant can be calculated as follows,

For 30 min,

100 = 800-y

y = 700

Total pressure after 30 min

(800 - y) + (2y) + (y)

= 800 + 2y

= 800 + 1400

= 2200 mm Hg

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