Acid Dissociation and Effusion
Not what you're looking for?
Hi, I need assistance with the following questions:
1) If the acid dissociation constant, Ksuba, for an acid HA is 8 x 10^-4 at 25 degree C, what percent of the acid is dissociated in a 0.50 M solution of HA at 25 degree C?
2) Equal numbers of moles of Hsub2(g), Ar(g), and Nsub2(g) are placed in a glass vessel at room temperature. If the vessel has a pin sized leak, which of the following will be true regarding the relative values of the partial pressures of the gases remaining in the vessel after some of the gas mixture has effused?
a) PsubH2 < PsubN2 < PsubAr
b) PsubH2 < PsubAr < PsubN2
c) PsubN2 < PsubAr < PsubH2
d) PsubAr < PsubH2 < PsubN2
e) PsubH2 = PsubAr = PsubN2
Purchase this Solution
Solution Summary
This solution is comprised of a concise and clear explanation which answers the two chemistry-based questions. An explanation of how to solve the first question is provided, along with a description explaining why the correct option for the second question is in fact correct.
Solution Preview
1) The reaction is:
HA + H2O -> H30^+ + A^- and the concentration changes will be:
0.5 -X X X
- The Ka is calculated as Ka =([H3O]*[A])/[HA]
Thus we can write 8.10^-4 = ...
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.
General Chemistry - Classification of Matter
This test will assess your knowledge on the classification of matter which includes elements, compounds and mixtures.
Thermochemistry
The quiz helps in revising basic concepts about thermochemistry.
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.