Problem: For the reaction 2A + B → C, the initial rate was measured at several different reactant concentrations. From the resulting tabulated data, determine the rate law for the reaction. [A] (M)  [B] (M) Initial Rate (M/s)0.050.050.0350.100.050.0700.200.100.56

FREE Expert Solution

rate law=kAxBy


order, x with respect to A.

  •  Use values where A changes while B remains the same.


Solve for x:

rate 2rate 1=Ax at rate 2Ax at rate 1

x = order

(Larger concentration should be on the numerator)


0.070.035=0.10x0.05x2=2x

**21 = 2

x = 1 → 1st order with respect to A

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Problem Details

For the reaction 2A + B → C, the initial rate was measured at several different reactant concentrations. From the resulting tabulated data, determine the rate law for the reaction.

 [A(M [B(M) Initial Rate (M/s)
0.050.050.035
0.100.050.070
0.200.100.56



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