APSC 221: Assignment 1 Solution - Summer 2015
Question 1: Chapter 4 (12 marks)
A company is planning to replace outdated equipment with models that are more energy-efficient and environmentalfriendly. Two models are under consideration. Model A is sold
Assignment #1 Due Sunday, June 7 at 11:59 p.m.
Reminder: A 10% per day penalty will be applied to all assignments submitted after the due date and no assignments
will be accepted for marking after the solution
Assignment # _2_
APSC 221 -Engineering Economics Assignment Cover Page Summer 2015
My signature below attests that this submission is my original work.
Following professional engineering practice, I bear the burden of proof for original work. I have read
Individual Assignment 2 Due Sunday July 4 at 11:59 p.m.
Question 1: Chapter 11 (10 marks)
Do question 11.19 on page 447 of the text book.
Question 2: ( Marks) Chapter 12 Taxes
Question 12.17 on page 496 in the
This material is copyrighted and is for the sole use of students registered in APSC 132 and
writing this exam. This material shall not be distributed or disseminated. Failure to abide by
these conditions is a breach of copyright and may also constitute a
Weak Acids and Bases
In weak acids
only small percentage of acid molecules dissociate (<5%).
are weak electrolytes (conduct electricity more poorly than
strong acid of equal concentration) because few ions formed
when acid molecules dissolved in water.
FACULTY OF APPLIED SCIENCE
April 12, 2007 at 2:00 p.m.
Duration: 3.0 h
Professor Wm Newstead
Student Number _ Name: _(Optional)
CASIO 991 AND APPROVED GOLD STICKER CALCULATORS ARE PERMITTED.
Acid Base Titration
Titration is process in which measured volume of solution of one
of reactants (known concentration) is added to second solution
containing other reactant (unknown concentration).
Chemistry 132 Equilibrium Lecture 05 and 06 Acid Base Ti
The Common Ion Effect In Acid-Base Equilibria
Consider a solution made by mixing
50 mL of 0.20 mol/L acetic acid (weak acid)
150 mL of 0.40 mol/L sodium acetate (a salt).
After mixing, [acetic acid] = 0.050 mol/L and [sodium acetate] =
0.30 mol/L. Why?
Hydrolysis of Salts
Neutral molecules, such as HCl(aq)- a strong acid- and
NH3(aq)- a weak base- may be responsible for the acidic or
basic nature of a solution.
However, acidic and basic solutions may also be produced by
the hydrolysis of salts.
The Integrated Rate Law
Rate has been expressed as a function of reactant
concentration (differential rate law).
How do we express reactant concentration as a function of
time (integrated rate law), given the differential rate law?
can only do integration
Effect of Temperature on Gas Phase Rate Constants
Suppose that in a reaction between gases
1030 collisions occur every second
if every collision yielded product molecules, rate would be 106
mol of product/s
assuming the usual probability of a successfu
If reaction is elementary (the reaction proceeds in one step)
rate expression can be found directly from equation
rate is proportional to the product of concentrations of
reacting species, each raised to a power equal to its
APSC 132 Tutorial 10 Problems
1a) For the following reaction at 298.15K, the reactant concentration was varied
and the resulting reaction rate was measured.
Using this data below, determine the order of the reaction, come up with the
differential rate law
APSC 132 Final Examination Review 2010
Examination Review Sheet #1
1. Which statement about equilibrium is NOT true?
a. When a system is disturbed, it responds to restore equilibrium.
b. Equilibrium in molecular systems is dynamic.
c. The value of the equ
R = 8.314 J/mol.K = 8.314 kPa.l/mol.K = 0.0821 atm.L/mol.K
STP = standard temperature and pressure = 273.2 K and 101.3 kPa
SATP = standard ambient temp. and press. = 298 K and 100.0 kPa
For monatomic gasses : Cv= 3/2R ; Cp=5/2R
cp - cv = R
explains why chemical reactions occur
enables us to predict if a reaction is spontaneous or not
enables us to predict the direction of chemical process
but tells us nothing about how reactions occur or anything
about the speed (rate) of
Acids and Bases
Acids and bases talked about in newspapers and on television
Environmental problems of acid rain
Antacid tablets to help settle upset stomaches
pH in relation to products such as deodorants and shampoos
Alkalinity and pH of swimming po
Chemical Processes with Different Reaction Orders
There is no simple way to derive a rate law. Some reactions
look to be first or second order but looks can fool you.
First Order Reactions
Example 1: Consider the decomposition of dinitrogen pentoxide.
APSC 132 PROBLEM SET #5
Acids and Bases
1. Old Dutch bleach contains 6.1% sodium hypochlorite (NaClO). Assume that
this means that 6.1 g of NaClO is found in 100 mL of solution. If the pKa of
hypochlorous acid is 7.53 and if NaClO is the only ingredient,
Lecture 2-01: The Gaseous State in Review
Expand to fill the container they occupy
Gas particles interact weakly with one another
Average distance between gas particles is large compared to
particle size so they are far less dense than solids
Introduction Lecture 1-02
Naming Inorganic Compounds (Nomenclature)
If all compounds referred to by a common or trivial name water,
ammonia, glucose - we would have to learn millions of unrelated
The systematic method
Lectures 2-03: A Microscopic View of Gases
The ideal gas equation
Summarizes physical properties of gases at low pressures
Was developed through experimental observations
Cannot explain what is happening microscopically to the atoms and
Lecture 2-02: Partial Pressures and van der Waals equation
Mixtures of Gases
Most gases in nature exist as mixtures. For example, air is
made up of oxygen, nitrogen and numerous trace gases.
Partial pressure of each gas in a gas mixture is the portion o
Lecture 1-01: Chemistry Basics
Matter: anything that occupies space and has mass, anything
made up of atoms
Is air a form of matter? How do you know?
Physical Properties: characteristics observed without changing
basic identity of substance. The key is
OQP,R =1/1EDSTAU OWV XZY\^X`_bacXdacX _ Re
OgfZR =B/1EhSTji X _`k ;,HjS l e
1S= TA/1E U O V XZY[o\^X`_bacX"apX _ R5q VV ZXZX YY