The following refer to a hypothetical chemical reaction, 2 A -> C + 3 D You are

ID: 795802 • Letter: T

Question

The following refer to a hypothetical chemical reaction, 2 A -> C + 3 D

You are investigating the kinetics of this reaction in lab. Your lab partner, in charge of collecting data, is distracted by

videos of explosions on his smartphone and only collects two data points. At t = 25 seconds, [A] = 0.0260 M; and at t =

115 s, [A] = 0.0178 M. (A) Determine the rate of the reaction over this time frame. (B) At what rate is D being formed

over this time frame? (C) What type of rate have you found? Show this rate graphically, on a sketch of a hypothetical full

plot of [A] vs time.

Using those two data points and the integrated rate laws, determine what the rate constant for the reaction should be if

the reaction is (1) 1st

order, (2) 2nd

order, and (3) zero order in A.

Finally: You repeat the kinetics experiment, but now have too little time to finish your lab report and analyze all the

data. But, you remember learning about half lives in lecture. For this experiment, the initial [A] was 0.0300 M, and [A] =

0.0150 M at t = 165 seconds. Use this data, and the k values you calculated above, to determine order in A and the

reaction rate law. Show your work for zero, 1st, and 2nd

order. And, last thing: Calculate the instantaneous rate of the

reaction when [A] = 0.0260 M.

The following refer to a hypothetical chemical reaction, 2 A -> C + 3 D You are

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