Answer to Question #248816 in General Chemistry for tannu

Question

For the reaction, Cl2(g)+2NO(g) 2NOCl(g), the initial concentrations, [Cl2]0 and [NO]0 are given below along the corresponding with initial rates. (5) [Cl2]0/M [NO]0/M Initial rate/Ms-1 0.10 0.10 3.010-3 0.20 0.10 6.010-3 0.20 0.20 2.410-2 Determine (i) the rate constant. 

Answer 1

The rate law for the reaction Rate =k[NO] 2 [Cl 2]

Rate constant can be calculated by substituting the value of rate, [NO] and [Cl 2] for any experiment

k=Rate/ [NO]² [Cl ²]

= 0.6/(0.15)² (0.15)²

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= 0.6/0.003375

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=177.77mol^-2 L ²min ^-1