205.1 When determining the shelf life of a pharmaceutical product, it was found that the decomposition rate constant at t1 and t2, respectively, is equal to k1 and k2 h-1 . Determine the activation energy, the temperature coefficient of the degradation rate constant of the pharmaceutical, and its shelf life (decomposition time per 1%) at t3.
N t1, 0C t2, 0C k1 k2 t3, 0C
1 80 90 0.347 0.924 10

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