For the reaction 5A + G 6D + 6E, the following initial rates of reaction were fo

Question

For the reaction 5A + G 6D + 6E, the following initial rates of reaction were found.

a) Determine the rate law, filling in the appropriate spaces below.

R = k [A] ___ [G] ___

b) Determine the overall order of the reaction.

c) Determine the rate constant (with appropriate units) for this reaction. Report your answer to three significant figures. When entering units, use "^" to indicate superscripts and a "*" to separate various units (i.e. M^-6*s^-1)

d) Determine the rate of reaction (in M/s) when [A] = 0.185 M and [G] = 0.791 M. Report your answer to three significant figures.

[A]o/M [G]o/M Initial Rate of Reaction / (M/s) 0.531 0.507 4.98×10-2 0.266 0.507 6.22×10-3 0.531 0.169 4.98×10-2

Explanation / Answer

a)

see row 1 and 2:

[A] becomes half

[G] is constant

rate becomes 1/8 times

so, oder of A is 3

see row 1 and 3:

[A] is constant

[G] becomes 1/3 times

rate is constant

so, oder of B is 0

rate = k [A]^3 [G]^0

rate = k [A]^3

b)

overall order = 3 + 0 = 3

c)

rate = k*[A]^3

put values from 1st row

4.98*10^-2 M/s = k (0.531 M)^3

k = 0.333 M^-2*s^-1

d)

rate = k*[A]^3

rate = (0.333)*(0.185)^3

   = 2.11*10^-3 M/s

Answer: 2.11*10^-3 M/s

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