5For the reaction A+B+CD+E, the initial reaction rate was measured for various i
ID: 894422 • Letter: 5
Question
5For the reaction A+B+CD+E, the initial reaction rate was measured for various initial concentrations of reactants. The following data were collected:
Trial
[A]
(M)
[B]
(M)
[C]
(M)
Initial rate
(M/s)
1
0.30
0.30
0.30
9.0×105
2
0.30
0.30
0.90
2.7×104
3
0.60
0.30
0.30
3.6×104
4
0.60
0.60
0.30
3.6×104
5Part A
What is the reaction order with respect to A?
Express your answer as an integer.
5Part B
What is the reaction order with respect to B?
Express your answer as an integer.
5Part C
What is the reaction order with respect to C?
Express your answer as an integer.
Trial
[A]
(M)
[B]
(M)
[C]
(M)
Initial rate
(M/s)
1
0.30
0.30
0.30
9.0×105
2
0.30
0.30
0.90
2.7×104
3
0.60
0.30
0.30
3.6×104
4
0.60
0.60
0.30
3.6×104
Explanation / Answer
generallay the rate law to write for the above given reaction rate (R) = k [A]p [B]q [C]r
5 part A) the rate increased 4 times when the concentration of the A doubled (it can be observed from the given data)
the reaction order with respect to A = 2
Part B] On observing the trail 4 where concentration of C remains same but A,B CHNGES BY 2 times the rate increases by 4 times . order of A is 2 calculated .
so order of B would be 0
Part c] since the rate of the reaction increases 3 times when CONCENTRATION OF C increased 3 times so order of reaction with respect to C = 1
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