Question on iodine clock pre-lab assignment, please explain and do question 2 an

Question

Question on iodine clock pre-lab assignment, please explain and do question 2 and 3(all of it). Thank you!

In the hypothetical reaction X(aq) + Y(aq) rightarrow P(aq) it is found that the time required to produce a constant small amount of product, P, varies as shown below. What is the order of X and Y? What is the overall order? Suppose that the small constant amount of product described in the preceding question corresponds to [P] = 1.0 times 10^-4 M. a. What is the average initial rate for each of the above runs? b. What is the average rate constant k for this reaction? (Be sure to include units for k.)

Explanation / Answer

Q2.

we must find the order, therefore, use initial rate method

maintain constant X, so choose experiment 1 and 2

X is constant and Y is doubled from 0.1 to 0.2

the rate then --> 50/12 = 4.16

ln(4.16)/ln(2) = 2.05; therefore 2nd rate with respect to [Y]

then, choose run 1 and 3

so [Y] is constant

and [X] is only changed

similarly

x is doubled from 0.1 to 0.2, 2x

the rate : --> 50/26 = 1.92

ln(1.92)/ln(2) / = 0.94

nearet number is 1

therefore, it is 1st order with respect to X

the best order is:

Rate = k*[X]^1[Y]^2

the overall order = x+ y = 1+2 = 3

this isthird order with respet to overall rate

Related Questions

Navigate

• Browse (All)
• Browse Q
• Subjects

---

---

Integrity-first tutoring: explanations and feedback only — we do not complete graded work. Learn more.