Consider the decomposition of no2. 2no2(g) → 2no(g) + o2(g) at 650 k, the rate constant is 1.66 sec-1. at 700k, the constant is 7.39 sec-1. calculate the activation energy.

Activation energy can be calculated using the formula:

At T₁=650 K, the rate constant, K₁ = 1.66 sec-1.  

At T₂=700 K, the constant, K₂ =7.39 sec-1.

Putting the values in the above equation,

Eₐ=1.12 ×10⁵ J mol⁻¹

or

Eₐ=112 KJ mol⁻¹

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