BUFFERS (SECTION 15.1)
1. Which of the following can be classified as buffer solutions?
a. 0.25 M HBr + 0.25 M HOBr
b. 0.15 M HClO4 + 0.20 M RbOH
c. 0.50 M HOCl + 0.35 M KOCl
d. 0.70 M KOH + 0.70 M HONH2
2. A certain buffer is made by dissolving NaHCO3 an
5-1 The Natural Logarithmic Function and Differentiation
5-3 Inverse Functions
p. 322: 45-59 odd,63, 65, 69, 71, 73, 77, 87, 89
p. 340: 71, 73
I. Properties of Logarithmic Functions
If a and b are positive numbers and n is rational, then
A. ln 1
B. ln(ab
Name _
AP Chemistry
BUFFERED SOLUTIONS (15.2)
1. Calculate the pH of each of the following buffered solutions.
a. 0.50 M C2H5NH2/0.25 M C2H5NH3Cl
b. 0.25 M C2H5NH2/0.50 M C2H5NH3Cl
c. 0.50 C2H5NH2/0.50 M C2H5NH3Cl
2. Calculate the pH of a buffered solutio
Name _
AP Chemistry
BUFFER CAPACITY (15.3)
1. Calculate the pH after 0.010 mole of gaseous HCl is added to 250.0 mL of each of the
following buffered solutions.
a. 0.050 M NH3/0.15 M NH4Cl
b. 0.50 M NH3/1.50 M NH4Cl
c. Do the two original buffered solutio
Experiment
Static and Kinetic Friction
12
If you try to slide a heavy box resting on the floor, you may find it difficult to get the box
moving. Static friction is the force that is acting against the box. If you apply a light horizontal
push that does no
Activity 10
Teacher Notes: Static and Kinetic Friction
PS-2826
Teacher Notes Activity 10: Static and Kinetic Friction
Time Estimates
Preparation: 20 min
Activity: 30 min
Objectives
Students will be able to
use a Force Sensor to measure the force of static