For the reaction 2A + 5G 6D + 5E, the following initial rates of reaction were f

Question

For the reaction 2A + 5G 6D + 5E, 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] = 0.577 M and [G] = 0.864 M. Report your answer to three significant figures.

[A]o/M [G]o/M Initial Rate of Reaction / (M/s) 0.378 0.404 7.82×10-3 0.189 0.404 7.82×10-3 0.378 0.135 2.61×10-3

Explanation / Answer

a) rate = k (A)^x (G) ^y

r1/r2 = (0.378/0.189)^x = 1

(2)^x = 1

hence x= 0 i.e rate is independent on the concentration of A

r1/r3 = (0.404/0.135)^y = 3

on solving, y = 1

rate = k (G)^1

b) overall order reaction = 1

c) k = rate/G = 7.82 * 10^ -3 / 0.404 = 0.0193 s-1

d) rate = 0.0193 * 0.864 = 0.017 molL-1s-1

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