Chemistry Equilibrium UHS 2023
PMDC Verified Question 34 of 102
One can estimate the direction in which equilibrium will shift with the help of:
A
Le Chatelier's principle
B
Law of mass action
C
Mess's law
D
Law of heat of formation
Tap any option to test your recall and reveal the step-by-step Propolis autopsy.

Propolis Cognitive Error Autopsy

Official Correct Choice:
Option A: Le Chatelier's principle
Concept:

Predicting the shift of a dynamic equilibrium when disturbed (by concentration, temperature, or pressure) is the central purpose of Le Chatelier's Principle.

Solution:

  • Henri Le Chatelier postulated that a system at equilibrium will dynamically shift to counteract any applied stress.


  • This principle acts as a predictive tool for chemists to manipulate reaction yields and control the direction of the shift.


Why other options are incorrect:

The Law of Mass Action provides the mathematical equation for \( K_c \), but doesn't predict shifts. Hess's Law determines total enthalpy. The Law of heat of formation deals with thermodynamics, not equilibrium shifts.

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