Chemistry Equilibrium BUMHS 2024
PMDC Verified Question 25 of 102
Le-Chatelier's principle does not give the information of effect of the following on equilibrium.
A
Time
B
Pressure
C
Temperature
D
Concentration
Tap any option to test your recall and reveal the step-by-step Propolis autopsy.

Propolis Cognitive Error Autopsy

Official Correct Choice:
Option A: Time
Concept:

Le Chatelier's Principle deals exclusively with thermodynamics (the final position of equilibrium) and completely ignores chemical kinetics (how fast reactions occur).

Solution:

  • The principle explicitly states how a system shifts in response to changes in macroscopic stresses.


  • These recognized stresses are precisely Pressure, Temperature, and Concentration.


  • However, it gives absolutely zero information about how long that shift will take to settle. Time (rates, kinetics, activation energy) is outside the scope of Le Chatelier's thermodynamics.


Why other options are incorrect:

Pressure, Temperature, and Concentration are the three core pillars that the principle is explicitly designed to predict.

Quality & Fidelity Assurance: Every question on BeambePrep is rigorously curated against the official PMDC syllabus with zero filler, zero out-of-syllabus content, and zero typos. When an authentic past paper originally contained a historical mistake or ambiguity from the examining board (such as UHS or NUMS), BeambePrep faithfully reflects the original paper while detailing the nuance and scientific consensus in the autopsy above.

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