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
2.1 Consider the table below. Compare the boiling points of 3 molecules with the same molar mass.
|
|
Mm |
bp, °C |
m* |
|
C3H8 |
44 |
231 |
0.1 |
|
CH3CHO |
44 |
294 |
2.7 |
|
CH3CN |
41 |
355 |
3.9 |
m* is the bond dipole which is a measure of polarity of a bond in a molecule
2.2 A concentrated perchloric acid solution has a density of 1.67 g/mL at 25°C and is 11.7 M. What is the percent by mass of HClO4 in the solution?
2.3 Given the initial rate data for the decomposition reaction, A → B + C.
Determine the rate expression for the reaction.
|
|
[A], M |
–Δ[A]/Δt M/s |
|
|
0.084 |
12.4 × 10–6 |
|
|
0.063 |
9.3 × 10–6 |
|
|
0.042 |
6.2 × 10–6 |
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