JEE Main2014ChemistryChemical KineticsActual
The rate coefficient (k) for a particular reactions is 1.3 10⁻⁴ M ⁻¹ ~s ⁻¹ at 100^ C , and 1.3 10⁻³ M ⁻¹ ~s ⁻¹ at 150^ C . What is the energy of activation ( E _ A ) (in . kJ ) for this reaction? ( R = molar gas constant =8.314 JK ⁻¹ ~mol ⁻¹ )
Options
- A16
- B60
- C99
- D132
Correct answer
B. 60
Step-by-step solution
According to Arrhenius equation aligned & k₂ k₁ = E_a 2.303 R ( 1 T₁ - 1 T₂ ) & 1.3 10⁻³ 1.3 10⁻⁴ = E_a 2.303 8.314 [ 1 373 - 1 423 ] &1= E_a 2.303 8.314 [ 1 373 - 1 423 ] &E_a=60 ~kJ / mole aligned