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Date: 17-12-2020
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Using half-life period for determine the order of a reaction
Two separate experiments are performed by taking different initial concentrations of a reactant.
The progress of the reaction in each case is recorded by analysis. When the initial concentration is reduced to one-half, the time is noted. Let the initial concentrations in the two experiments be [A1] and [A2], while times for completion of half change are t1and t2 respectively.
Calculation of order of reaction. We know that half-life period for a first order reaction is independent of the initial concentration, [A]. We also know :
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