122 test#2 F15
Name: _
Using Henderson Hasselbach, calculate the pH of a buffer that has 0.65M acetic acid and 0.50 M sodium acetate before
and after 0.06 M nitric acid is added. Write the equilibrium and buffering reactions. Ka of HAc = 1.8 x 10 -5 (show
122 test#2 F15
Name: _
Using Henderson Hasselbach, calculate the pH of a buffer that has 0.65M acetic acid and 0.50 M sodium acetate before
and after 0.06 M nitric acid is added. Write the equilibrium and buffering reactions. Ka of HAc = 1.8 x 10 -5 (show
122 test#2 F15
Name: _
Using Henderson Hasselbach, calculate the pH of a buffer that has 0.65M acetic acid and 0.50 M sodium acetate before
and after 0.06 M nitric acid is added. Write the equilibrium and buffering reactions. Ka of HAc = 1.8 x 10 -5 (show
NAME:_
(simple scientific calculator/show all work(units/substances for credit)
1. Calculate the equilibrium concentrations of 12.00 mol iodine gas and 8.00 mol hydrogen gas for the
production of hydrogen iodide gas in a 4.00 Liter vessel. The K = 86.5
2.
CHM 121
Study Guide for Exam 2
*REMINDER: You can use a non-programmable, non-graphing calculator only
Chapter 4- Sections 4.1-4.12
Molarity- definition, calculations, solvent/solute/solution
o Calculating the molarity of a solution
o Calculating the numb
Unit Conversion Worksheet
Conversions:
1 Hour= 3600 seconds
1 meter = 3.28 feet
1 kg = 2.2 lbs
1 m/s = 2.2 miles/hour
1 mile = 5280 feet
1km = 0.62 miles
1lb = 0.45 kg
1ft = 12 inches
Convert the following quantities:
565,900 second to days
17 years to mi
Thermodynamics (Heat )
Part I
First Law of Thermodynamics:
E = Q (heat) + W (work)
1). Calculate the value of E in joules for a system that loses 50 J of heat and has 150 J
of work performed on it by the surroundings.
Answer: + 100 J
E = q + w = 150 J + (