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Manipal MET2014ChemistryChemical Kinetics

Raw milk sours in about 4 h at 27^ C , but in about 48 h in a refrigerator at 17^ C . What is the activation energy for souring of milk?

Options

  1. A78.3 ~kJ ~mol ⁻¹
  2. B46.21 ~kJ ~mol ⁻¹
  3. C23.5 ~kJ ~mol ⁻¹
  4. D80.8 ~kJ ~mol ⁻¹

Correct answer

A. 78.3 ~kJ ~mol ⁻¹

Step-by-step solution

aligned & K 1 t & k₂ k₁ = t₁ t₂ = E_a R ( T₂-T₁ T₁ T₂ ) & 48 4 = E_a 8.314 ( 10 300 290 ) & E_a=78.0 ~kJ ~mol ⁻¹ aligned

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