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the reaction of A + B ? AB, the following data were obtained: Trial Initial [A]

ID: 800215 • Letter: T

Question

the reaction of A + B ? AB, the following data were obtained:

Trial

Initial   [A]

Initial   [B]

Initial   Rate

1

0.40

0.40

0.480   mol/dm3/s

2

0.40

0.80

1.92   mol/dm3/s

3

0.20

0.40

0.24   mol/dm3/s

a.       Write the rate expression for this reaction.

a.

b.      Calculate the rate constant, k

b.

c.       . Find the rate if [A] becomes 0.50 M and [B] becomes 0.25 M (temp is unchanged)

c.

1- The following data were obtained for 2A + 2B + C ? D + E:

Trial    

[A]   mol/L

[B]   mol/L

[C]   mol/L

Rate   mol/L/sec

1

0.151

0.151

0.151

0.48   

2

0.302

0.151

0.151

0.96   

3

0.151

0.151

0.076

0.12   

4

0.151

0.302

0.151

1.92   

A) What is the rate equation and what is k?

B) If you are trying to achieve a rate of 1.5 mol/L/sec, and the initial concentrations of A and B

Were both 0.200 M, what would the initial concentration of C have to be?

  

Trial

     

Initial   [A]

     

Initial   [B]

     

Initial   Rate

     

1

     

0.40

     

0.40

     

0.480   mol/dm3/s

     

2

     

0.40

     

0.80

     

1.92   mol/dm3/s

  

     

3

     

0.20

     

0.40

     

0.24   mol/dm3/s

  

Explanation / Answer

the reaction of A + B ? AB, the following data were obtained: Trial Initial [A]