Chemistry · Rate of a chemical reaction, factors affecting the rate of reactions: concentration, temperature, pressure and catalyst
Which of the following are the correct statements regarding the catalyzed and un
Which of the following are the correct statements regarding the catalyzed and uncatalyzed reactions at constant temperature? This question has multiple correct options
- A. Catalyzed reaction does not alter \( \Delta H \) of the reaction
- B. At constant temperature, \( \Delta G^{0} \) of the catalysed and uncatalyzed reaction is same
- C. Catalyzed reaction alters equilibrium constant even at constant temperature
- D. Catalysed reaction alters \( r_{f} \) and \( r_{b} \) values equally at constant temperature
Step-by-step solution
A catalyst speeds up the reaction by providing an alternative pathway with lower activation energy but does not affect the enthalpy change (ΔH) of the reaction because ΔH depends only on the initial and final states. Similarly, ΔG° and equilibrium constant remain unchanged; the catalyst alters forward and reverse rates equally.
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