CBPtut1 - Chemical & Biochemical Processes...

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Unformatted text preview: Chemical & Biochemical Processes Reaction Kinetics Tutorial 1 1. At 25 C a rate constant has a value of 5 10 3 s-1 . Activation energy is 55,000 J mol-1 . What is the value of the rate constant for the same reaction at 70 C ? 2. Ethylene dichloride can be thermally cracked to yield vinyl chloride according to: CH 2 Cl.CH 2 Cl CH 2 =CHCl+HCl If the reaction is first order and the velocity constant is given by: RT e k 460 , 196 81 . 10 10- = , calculate the value of k at 600 C. Note that the gas constant, R , is given by 8.31 J mol-1 K-1 . 3. The following values have been obtained for the velocity constant ( k ) in the decomposition of N 2 O 5 : T ( C) 25 45 65 k (min-1 ) 4.7 10-5 2.0 10-3 3.0 10-2 3.0 10-1 Calculate the energy of activation ( E ) and the Arrhenius factor ( A ) in the equation: RT E Ae k- = for this reaction. R = 8.31 J mol-1 K-1 . 4. The decomposition of compound A is first order with an activation energy of 52.3 kJ mol-1 . If 10 % of A is decomposed in 10 minutes at 10...
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CBPtut1 - Chemical & Biochemical Processes...

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