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Chemistry · EQUILIBRIUM

हिन्दी

Consider the following statements regarding the general characteristics of equilibria involving physical processes: (A) Equilibrium is possible only in a closed system at a given temperature. (B) Both opposing processes occur at different rates to maintain dynamic stability. (C) All measurable macroscopic properties of the system remain constant. (D) When equilibrium is attained, it is characterized by a constant value of one of its parameters at a given temperature. Which of the above statements are correct?

  1. (A), (B) and (C) only
  2. (A), (C) and (D) only
  3. (B) and (D) only
  4. (A), (B), (C) and (D)

Correct answer · Option 2

(A), (C) and (D) only

Explanation

Statement (B) is false because opposing processes must occur at the same rate. Statements (A), (C), and (D) are all listed characteristics of physical equilibria.

Related questions

Given below are two statements:\n Statement I: Chemical equilibrium can be attained from either direction, whether starting with pure reactants or pure products.\n Statement II: The Law of Chemical Equilibrium and Law of Mass Action was proposed by Cato Maximillian Guldberg and Peter Waage in 1864. \nIn the light of the above statements, choose the most appropriate answer from the options given below:→For a 0.10 M aqueous solution of a diprotic acid \( \text{H}_2\text{X} \), the ionization constants are \( K_{a_1} = 4.0 \times 10^{-5} \) and \( K_{a_2} = 1.6 \times 10^{-11} \). The concentration of divalent anion \( [\text{X}^{2-}] \) at equilibrium is:→When \( \text{HCl} \) gas is passed through a saturated solution of \( \text{NaCl} \), pure \( \text{NaCl} \) precipitates out while impurities like \( \text{MgSO}_4 \) and \( \text{Na}_2\text{SO}_4 \) remain dissolved. The underlying reason for this phenomenon is:→In the equilibrium \( \text{Fe}^{3+}(\text{aq}) + \text{SCN}^-(\text{aq}) \rightleftharpoons [\text{Fe}(\text{SCN})]^{2+}(\text{aq}) \) (deep red), what happens to the red colour intensity upon the addition of oxalic acid \( (\text{H}_2\text{C}_2\text{O}_4) \) and why?→
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