Finding Concentration with Excel Graph
Not what you're looking for?
Solution to be listed in Excel Graphs
The initial speed of formation of a substance X depends on the concentration as it follows:
C x*103 [M] 5.0 8.2 17 30
Vx, 0*107 [Ms-1] 3.6 9.6 41 130
Find the order of the reaction and the constant of speed.
Solution:
Let the order of reaction be "m" and constant of speed k.
Then,
Vx=k[Cx]m
Hint: plot ln[Cx] on x-axis and ln[Vx] on y-axis
Slope will give order m and intercept will give k
Exercise 3
The concentration of a species Y and varies with time in agreement with:
t [s] 0 200 600 1000
C [M] 0.110 0.073 0.032 0.014
Speed of reaction(Vx)
M/s (0.110-0.073)/200=
1.85*10^-4 (0.073-0.032)/(600-200)=1.03*10^-4 (0.032-0.014)/(1000-600)=0.450*10^-4
Solution:
Let the order of reaction be "m" and constant of speed k.
Then,
Vx=k[C]m
Hint: plot ln[C] on x-axis and ln[Vx] on y-axis
Slope will give order m and intercept will give
Exercise 6
To obtain A and Ea from the following data:
T [K] 300 350 400 450 500
k* 10-8 [s-1] 0.079 0.30 0.79 1.7 3.2
Solution:
K=Ae-Ea/RT
Or
ln(k) = lnA-(Ea/RT)
HINT:plot ln(k) on y-axis and 1/T on x-axis,
Then slope of line =-Ea/R gives Ea and intercept will give A
Purchase this Solution
Solution Summary
This solution shows step-by-step calculations to determine the order of reaction and the constant speed of various chemical reactions. Graphs showing the intercept and the slope are also included.
Purchase this Solution
Free BrainMass Quizzes
Organic Chemistry Naming: Alkanes
This is a quiz which is designed to assist students with learning the nomenclature used to identify organic compounds. This quiz focuses on the organic compounds called Alkanes.
Thermochemistry
The quiz helps in revising basic concepts about thermochemistry.
General Chemistry - Classification of Matter
This test will assess your knowledge on the classification of matter which includes elements, compounds and mixtures.
Match Elements with their Symbols
Elements are provided: choose the matching one- or two-letter symbol for each element.
Functional groups in Organic Chemistry
You will be tested on the names of functional groups in Organic Chemistry. It is very important to know the functional groups to understand Organic reactions.