Chemistry 1A, Spring 2014, Midterm 2
Test Form A
For the redox reaction 2Cu+ + F2 2Cu2+ + 2F, which of the following are the correct half-reactions?
F2 + 2e 2F
F F + e
F2 2F + 2e
2Cu+ 2Cu2+ + 2e
2Cu+ + 2e 2Cu2+
NOTE! This is simply a summary of my notes and should
only be considered a LOOSE quide to the textbook. The only
way to learn this chemistry is thru doing problems.
Definite Proportion of Moles:One mole of H2 always reacts
with one m
Chem 152 Midterm 11: Summer 2007
Section: Seat #2 Student #2
Please, do not initiate until instructed to do so
Please clear the memory of your calculator
This is a 55 minute exam, and it is worth a total of 100 pts
Please show all work for full cred
Chemistry 1A, Spring 2014, MWF 2-3:10, Midterm 1
Test Form A
1. When 6.0 L of hydrogen gas (H2) reacts with 1.0 L of phosphorous gas (P4), 4.0 L of gaseous
product is formed. All volumes of gases are measured at the same temperature and pressure. What
Summary of important acid-base systems
(other than H2O)
[H+] or [OH-]
are listed in gray)
Strong acid (HA)
H+ , A-
Strong base (B)
[OH-] = Cb
Weak acid (HA)
H+, A-, OH-
[H+] = K
Blood and Buffers
Carbonate is the main buffer in blood
CO2 is converted to H2CO3 by carbonic anhydrase
H2CO3 then sets up an equilibrium
H2CO3 = HCO3- + H+
Therefore, as [CO2] increases, pH increases.
BUT, Blood pH must stay between 7.35 and 7.45.
Acids and Bases
Arrhenius' Postulate: Acids produce hydrogen ions and
bases produce hydroxide ions in aqueous solution
Bronsted-Lowry Definition: An Acid is a proton donor
and a base is a Proton acceptor
How is a hydronium ion (H3O+) produced?
Chemical Reactions and Solution
As a Solvent, how does water
Water is bent, 105 degrees.
Lone pairs and hydrogens generate a
slight charge difference between oxygen
It is represented by partial
States of Matter:
What happens when you increase heat?
Demo: Liquid He
Units of Pressure
1 standard atmosphere
= 1 atm
= 760 mm Hg
= 760 torr
= 101,325 pascals
= 14.7 lb/sq.in.
PV = k(a constant)
V = constant(T)
Atoms Molecules and Ions
Chemistry is the first science. Used to
make fire, ornaments, weapons, embalming fluids.
Fundamental Laws of chemistry;
Conservation of Mass
Antoine Lavoisier (1743-1794) explained combustion.