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Chemistry · EQUILIBRIUM

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For a physical or chemical process, which of the following is true at dynamic equilibrium?

  1. Rates of forward and backward reactions are equal
  2. The concentration of reactants must always equal the concentration of products
  3. All molecular reactions completely cease to occur
  4. The system remains open to matter exchange

Correct answer · Option 1

Rates of forward and backward reactions are equal

Explanation

Dynamic equilibrium is characterized by the rates of the forward and reverse processes being equal, while measurable macroscopic properties remain constant.

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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