(Solved) THe dimerization of butadiene

s.h_math

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A month ago

THe dimerization of butadiene

kindly please have a look at this question as I am unsure of what is needed to be done.

THANKS

The dimerization of butadiene is a second-order reaction.
2 C4H6(g) —Y C8H12(g)
The following data were collected at 500 K.
Time (s)
0.00
579.0
1452
3157
4639
6179
Calculate the value of the rate constant.
0.0126
I ncorrect
[C4H6] (M)
0.158
0.0799
0.0407
0.0203
0.0146
0.0109
Determine the concentration of butadiene remaining after 26.45 min.
0.038
[C4H6] =
Incorrect

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bio_man

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Educator

A month ago

I get this:

The rate constant is the slope: 0.0139

If we use the formula y = 0.0139x + 5.1123, and substitute 26.45 mins, we get y.

Change 26.45 minutes to seconds:

\[26.45 \text{ minutes} \times \frac{60 \text{seconds}}{1 \text{min}} = 1587 \text{ seconds}\]

y = 0.0139(1587) + 5.1123
y = 27.1716

Now take the reciprocal:

Concentration is 1/27.1716 = 0.0368

You were way off from me, that's concerning. Watch this video

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s.h_math Author

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A month ago Edited: A month ago, s.h_math

For some reason, part 2 is being marked incorrectly. I went over the solution as well

It gave this in response...

You did not correctly calculate the concentration of butadiene remainning after 26.45 min.

Use the integrated rate law for a second-order reaction to calculated the concentration remaining
1[A]𝑡=𝑘𝑡+1[A]0

where 𝑘
is the rate constant, 𝑡
is the time, [A]0
is the initial concentration of the reactant, and [A]𝑡
is the concentration of the reactant at time 𝑡.

Insert the time, initial concentration (at 𝑡=0.00 s),
and the calculated rate constant into the equation and solve for [A]𝑡.
Make sure to convert the time from minutes to seconds.

Post Merge: A month ago

PART 2 correct amswer is 0.03526M

Thanks sir

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bio_man

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Educator

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THe dimerization of butadiene

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