Moderate

Le-Chatelier's principle suggests:

Correct answer: D. All of these

  • A. If a system in equilibrium is subjected to equilibrium system tries to minimize stress change of concentration, pressure or temperature the equilibrium shifts in the direction that tends to minimize the effect of change
  • B. It is applicable to all types of dynamic equilibria.
  • C. A catalyst keeps both equilibrium position and equilibrium constant unchanged.
  • D. All of these

Explanation

Statement A accurately summarizes Le Chatelier's principle. When an external change is applied to a system in equilibrium (such as changing concentration, pressure, or temperature), the system responds by shifting its equilibrium position in a way that helps counteract the imposed change. This is the fundamental concept of Le Chatelier's principle. Le Chatelier's principle is a general principle that applies to various types of dynamic equilibria, including chemical reactions, physical equilibria, and even biological systems. It provides insights into how systems respond to changes in order to maintain equilibrium. Catalysts don't affect the position of equilibrium or the equilibrium constant. They only facilitate the attainment of equilibrium more quickly by increasing the rates of both the forward and reverse reactions, ensuring that the equilibrium constant is achieved more rapidly but without altering its value. Options A, B, and C are all correct and accurately describe aspects of Le Chatelier's principle.

Last updated

About Chemical Equilibrium

Reversible reactions reach dynamic equilibrium when forward and reverse rates become equal, and Le Chatelier's principle predicts the effect of changing concentration, pressure or temperature. The chapter also covers solubility product, the common ion effect, buffer action and the conditions used in Haber's process, with equilibrium shifts distinguished from changes in the equilibrium constant.

Practise Chemical Equilibrium

625 free Chemical Equilibrium MCQs from Chemistry, each with the correct answer and an explanation. Unlimited attempts, no account needed.

Exams that ask Chemistry questions like this

Chemistry is on 12 papers prepared for on TestUstad, and all of them draw the same bank, so this question is worth knowing for every one of them.

Related questions