16 . × KG The Table To The Right Gives x .com/ibiscms/mod/ibis/view.php?id=43957

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16 . × KG The Table To The Right Gives x .com/ibiscms/mod/ibis/view.php?id=4395771 10/20/2017 11:55 PM 9 Gradebook 13.7/100 Print Calculator d Periodic Table Question 10 of 20 Sapling Learning the facutyat Unhersity of Arizona For the reaction of iodine atoms with hydrogen molecules in the gas phase, these rate constants were obtained experimentally: T(K) 417.9 480.7 520.1 633.2 666.8 1.12 x 105 2.60 x 10% 3.96 x 10% 9.38 x10 11.50x10 2 Kg)+ H2(g)->2HI (9) Calculate the activation energy for this process: Number kJ/ mol about us careers l privacy poscyl wms of use : contact us

Explanation / Answer

take any two reading
i will take forst two reading

use,
ln(K2/K1) = (Ea/R)*{1/T1 - 1/T2}
ln{(2.60*10^5)/(1.12*10^5)} = (Ea/8.314)*{1/417.9 - 1/480.7}
ln(2.32) = (Ea/8.314)*{2.39 - 2.08}*10^-3
0.842 = (Ea/8.314)*(0.31*10^-3)
0.842 = Ea*3.73*10^-5
Ea = (2.26*10^4) KJ/mol

Answer : (2.26*10^4) KJ/mol

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