a) What is the rate law for this reaction? b) What is the value of the rate constant? c) What is the reaction rate when the concentration of HgCl2 is 0.080 M and that of C2O42- is 0.10 M if the temperature is the same as in the above experiments?

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Author:Steven S. Zumdahl, Susan A. Zumdahl, Donald J. DeCoste
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.  Consider the following reaction between mercury(II) chloride and oxalate ion:

 

            2HgCl2(aq) + C2O42-  ® 2Cl-(aq)  + 2CO2(g) +  Hg2Cl2(s)

 

The initial rate of this reaction was determined for several concentrations of HgCl2 and C2O42-, and the following rate data were obtained:

Experiment

[HgCl2] (M)

[C2O42-] (M)

Rate (M/s)

1

0.105

0.15

1.8 x 10-5

2

0.105

0.30

7.1 x 10-5

3

0.052

0.30

3.5 x 10-5

4

0.052

0.15

8.9 x 10-6

  1. a) What is the rate law for this reaction?
  2. b) What is the value of the rate constant?
  3. c) What is the reaction rate when the concentration of HgCl2 is 0.080 M and that of C2O42- is 0.10 M if the temperature is the same as in the above experiments?
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