# For the reaction A + B AB , the following data were obtained.                                 Trial        Initial [A]             Initial [B]             Initial Rate (mol/L•s)720 M 0.180 M                                0.470                   720 M             0.720 M                               1.880360 M 0.180 M                                0.117Determine the order with respect to each reactantDetermine the overall order of reactionWrite the rate expression for the reaction.Find the value of the rate constant, k.

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1. For the reaction A + B AB , the following data were obtained.

Trial        Initial [A]             Initial [B]             Initial Rate (mol/L•s)

• 720 M 0.180 M                                0.470
• 720 M             0.720 M                               1.880
• 360 M 0.180 M                                0.117
1. Determine the order with respect to each reactant
2. Determine the overall order of reaction
3. Write the rate expression for the reaction.
4. Find the value of the rate constant, k.
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Step 1

Given data contains initial concentration of A and B along with the initial rate of reaction.

Step 2

1.

To determine the order of reaction with respect to A, chose two reactions where the initial concentration of B is the same and to determine the order of reaction with respect to B, chose two reactions where the initial concentration of A is same.

Step 3

Consider the trial 3 and 1.  The concentration of A doubles whereas the concentration of B remains the same.  The rate of the reaction also increases by four times.  This means the reaction is second order with respect to A.

Consider the ...

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