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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Transcribed Image Text:50
Concentration (mol/L)
es Notes.pdf
Reaction Rates
Reaction rates are measured in units of
which is = to
0.10
rate =
Dnpoid
0.08-
1) Determine the average rate of product
formation between 50 and 150 seconds.
H90'0
0.04
2) Is the tangential slope positive or negative for:
0.02-
- Product?
reactant
Reactant?
150
00,
250
Time (s)
The
at a single time is the
rate.
The slope over a range of time is the
rate.
Connection to Mathematics & Physics
Slope is the rate of change. The symbol
(delta) means
"for a range (average rate of change).
Example: A car decreases speed from 35 m/s to 15 m/s over a period of 5 seconds.
What is the car's acceleration (average rate of change for velocity)?
Example: The concentration of CHaF product increases from 0.20 mol/L to 0.80 mol/L
over 12 seconds of reaction time. Determine the average reaction rate for this time.
CH4 + F2 CH3F + HF
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