Answered: Time (s) 40 80 160 120 Moles of A 0.045…

Chemistry

10th Edition

ISBN:9781305957404

Author:Steven S. Zumdahl, Susan A. Zumdahl, Donald J. DeCoste

Publisher:Steven S. Zumdahl, Susan A. Zumdahl, Donald J. DeCoste

Chapter1: Chemical Foundations

Section: Chapter Questions

Problem 1RQ: Define and explain the differences between the following terms. a. law and theory b. theory and...

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Question

A flask is charged with 0.100 mol of A and allowed to react
to form B according to the hypothetical gas-phase reaction
A(g)----->B(g). The following data are collected:

(a) Calculate the number of moles of B at each time in
the table, assuming that A is cleanly converted to B with no intermediates. (b) Calculate the average rate of disappearance
of A for each 40 s interval in units of mol/s. (c)
Which of the following would be needed to calculate the
rate in units of concentration per time: (i) the pressure of
the gas at each time, (ii) the volume of the reaction flask,
(iii) the temperature, or (iv) the molecular weight of A?

Time (s)
40
80
160
120
Moles of A
0.045
0.030
0.100
0.067
0.020

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