Cisplatin is a chemical used in chemotherapy to fight some forms of cancer. Cisplatin reacts with water according to the equation

PtCl2(NH3)2(aq) + H2O(l) ---> PtCl(H2O)(NH3)2+(aq) + Cl-(aq)

The rate of the reaction of cisplatin with water was studied and the following data was obtained.

Experiment

[PtCl2(NH3)2]

[H2O]

Initial Rate (M min-1)

1

0.015

55.5

2.19 x 10-5

2

0.025

55.5

3.65 x 10-5

3

0.080

55.5

1.17 x 10-4

Answer the following questions.

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Give me some responses to the questions below and I'll give you some extra credit.

SID#:

Laboratory Section:

1. Compare Experiment 1 and 2. By what factor did the [PtCl2(NH3)2] increase?

Hint (Tell me if you needed to use the hint..it is OK to use it I just would like to know if you had to or not..Thanks...dr..g)

2. Compare Experiment 1 and 2. By what factor did the initial rate increase?

Hint (Tell me if you needed to use the hint..it is OK to use it I just would like to know if you had to or not..Thanks...dr..g)

(For the next few questions do as well as you can. If you are not sure of what some of the words (order, rate law equation, rate constant) mean check our the example I did in class (lecture notes) on Wednesday, September 26, 2001)

3. Compare the ratio of the [PtCl2(NH3)2] in Exp 1 and 2 to the ratio of the Initial rate for Exp 1 and 2. What is the order of the reaction with respect to [PtCl2(NH3)2]? (NOTE: If you are not sure what order is say so.)

4. What is the rate law for this reaction (assume H2O does not appear in the rate law equation.) (NOTE: If you are not sure what a rate law is say so.)

5. Calculate the magnitude and the units for the rate constant. (NOTE: If you are not sure what a rate constant is say so.)

6. Is there anything about the reaction or the questions that you feel you do not understand? List your concerns/questions.