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EEJ MAIN Chemistry QUESTION #5531
Question 1
For a reaction obeying the Arrhenius equation in the range $0°C < T < 300°C$: Plot I shows $k$ vs $E_a$ (decreasing curve), Plot II shows $k$ vs $T(°C)$ (increasing curve). Choose the correct option.
  • I is right but II is wrong
  • Both I and II are correct✔️
  • I is wrong but II is right
  • Both I and II are wrong
Correct Answer Explanation
From Arrhenius equation: $k = Ae^{-E_a/RT}$. As $E_a$ increases (at constant T), $k$ decreases — Plot I (k vs $E_a$ as a decreasing curve) is correct. As T increases (at constant $E_a$), $k$ increases exponentially — Plot II (k vs T as an increasing curve) is correct. Both plots are correct representations.