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40.Mention the effect of temperature on the, i) rate of reaction, ) ii) rate constant, Bo Wanjine ner rate of reaction increases., , c i) With the increases of temperature ., = i‘ With the increase of temperature rate ‘constant of the reaction increases ., , iil) ty of a reaction decreases., 41.What is activation energy or energ, Ans: The minimum excess energy acquired by the reactant, is called activation energy. or, , The minimum energy that the normal rea, Called activation energy. :, 42,Write the Arrhenius equation for energy of activation., Ans: k=Ae®a/®r, , Where k = Rate constant , A = Arrhenius constant , € = Exponential, E, = Energy of activation R = Gas constant, T = Absolute temperature, , The different forms of Arrhenius equation are, , = log A- —f _ gee [BT, log k= log As an3 er OR 9, 230R| TT, , , , , , of activation ? i, , its upon collisions to form acti, , icting molecules required to convert into, , , , , , , , , , 43.The rate constants of a reaction at 500K and 700K are 0.02 s* and 0.07 s*, Calculate the energy of activation of the reaction., , log3.5x2.303x8.3 uf, , 44,Rate constant of a reaction doubles when the tempe: increa:, a Q rat, 27°C to 37°C “alculate activation energy of the ee io si, , ple SAL ea, ee oe rate Given 7: = 27 + 273 = 300K, R = 8,314)K¢molt, , , , = Te = 37 +273 = 310K, log 2= Fa ___{310 -300, 2.303 x 8134 | 300 x310, , o3oi0- Fa _, 10, 2.303 x 8.314 300x310, , , , , .3010 x 2.303 x 8.314 x3:, = 53598 J/mole oe, , E, = 53.598 k} /mole