by using half life equation, we getK = 0.693t1/2K = 0.69330 min = 0.0231 at 27°C or 300 KK = 0.69310 min = 0.0693 at 47°C or 320 KFrom the Arrhenius equationlogk2k1 = Ea2.3031T1-T2 Ea = 2.303×R×T1×T2T2-T1log k2k1= 2.303 × 8.314 J K-1 mol-1×300×320 K320 K - 300 K log 0.06935-10.02315-1 = 43.848 kJ mol-1.
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