The rate constant for the gas-phase decomposition ofN2O5 NO2O5 -----> 2NO2 + 1/2
ID: 676902 • Letter: T
Question
The rate constant for the gas-phase decomposition ofN2O5 NO2O5 -----> 2NO2 + 1/2O2 has the following temp dependence T(K) k(s^-1) 338 4.9X 10^-3 318 5.0X 10^-4 298 3.5X 10^-5 Make an appropriate graph using these data and determine theactivation energy for this reaction. The rate constant for the gas-phase decomposition ofN2O5 NO2O5 -----> 2NO2 + 1/2O2 has the following temp dependence T(K) k(s^-1) 338 4.9X 10^-3 318 5.0X 10^-4 298 3.5X 10^-5 Make an appropriate graph using these data and determine theactivation energy for this reaction.Explanation / Answer
We Know that : log K2 / K1 = Ea / 2.303 R ( 1 / T1 - 1 / T2) log ( 5.0 x10-4 ) / ( 4.9 x10-3 ) = Ea / 2.303x 8.314 J / K-mole ( 1 / 318 - 1 / 338 ) K Ea = 101709.700392 Joule / mole = 101. 709700 KJ / mole In order todetermine the Ea graphically we have toplot ln K on Y - axis and 1/ T on X- axis The slope = ln K / 1 / T = 101. 709700 KJ / mole In order todetermine the Ea graphically we have toplot ln K on Y - axis and 1/ T on X- axis The slope = ln K / 1 / TRelated Questions
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