Question
Asked Nov 5, 2019
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3. Rate date were obtained for the following reaction at 25 C. What is the rate law expression and rate constant
for the reaction?
2A+ B + 2C
D+2E
Initial Rate of
Formation of D
5.0 x 104 M-min
51.5 x 103 M-min
5.0 x 10 M-min
4.5 x 103 M-min
Experiment
Initial [A]
Initial [B]
0.20 M
0.20 M
Initial [C]
0.10 M
0.30 M
0.10 M
0.30 M
1
2
0.10 M
0.20 M
0.30 M
0.40 M
0.20 M
0.60 M
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3. Rate date were obtained for the following reaction at 25 C. What is the rate law expression and rate constant for the reaction? 2A+ B + 2C D+2E Initial Rate of Formation of D 5.0 x 104 M-min 51.5 x 103 M-min 5.0 x 10 M-min 4.5 x 103 M-min Experiment Initial [A] Initial [B] 0.20 M 0.20 M Initial [C] 0.10 M 0.30 M 0.10 M 0.30 M 1 2 0.10 M 0.20 M 0.30 M 0.40 M 0.20 M 0.60 M

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Expert Answer

Step 1

The rate law expression and the rate constant for the given reaction is to be determined using the given data-

2A + B + 2C → D + 2E

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Initial [B] Initial [C] Experiment Initial [A] Initial ate of formation of D (M.Min 5.0x10-4 1 0.10 M 0.20 M 0.10 M 0.20 M 51.5x10-3 2 0.20 M 0.30 M 5.0 x10- 3 0.30 M 0.20 M 0.10 M 4.5x10-3 0.40 M 0.60 M 0.30 M

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Step 2

Rate law expression for any chemical reaction is any equation that relates the rate of that reaction with the concentrations of the reactants.

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For example, for a the reaction- A+B -> C+D The rate law expression is - Rate k [A BJ Where k is the rate constant And x and y are the order ofreaction of A and B respectively

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Step 3

Write the rate law expression for each given experiment-

Let x, y and z be th...

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Rate 1 k[A,BJ'.[C,] 5.0x10k (0.10)* (0.20) (0.10) Equation (1) For experiment 2: Rate 2 k [A [B, J' [C 51.5x 10k (0.20)* (0.20)' (0.30) Equation (2) For experiment 3: Rate 3 k [A [B3][C] 5.0x10k(0.30)* (0.20) (0.10) Equation (3) For experiment 4: Rate 4 k [A.[BJ.[C4] 4.5 x 10k(0.40)* (0.60)'(0.30) Equation (4)

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