Consider the given plots for a reaction obeying Arrhenius equation ( 0 ° C < T < 300 ° C )…

Consider the given plots for a reaction obeying Arrhenius equation (0°C<T<300°C): ( K and Ea are rate constant and activetion energy, respectively )

(I) 

(II) 

  1. I is wrong but II is right
  2. Both I and II are wrong
  3. I is right but II is wrong
  4. Both I and II are correct

Solution

K=Ae-Ea/RT

K  decreases exponentially with Ea

∴ The first graph is correct.

But temperature is given in  oC 
So,  K≠0 at 0oC.

∴  For temperature between 0oCand 300oC, the graph will come like (II)

Asked in: JEE Main 2019 (10 Jan Shift 1)

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