Experiment 3:
Development of an Equation
Sarah Clark
Chemistry 1210
09/23/2015
T.A. Ryan Reagans
Clark 2
Purpose: A chemical reaction was orchestrated and observed in order to discover a reactivity
pattern. Then, that pattern was used to create a chemical
Week 2 lectures-tentative
10.7 10.8 Kinetic-Molecular Theory 420 Application to the Gas Laws Molecular Effusion and Diffusion 423 Graham's Law of Effusion Diffusion and Mean Free Path Real Gases: Deviations from Ideal Behavior The van der Waals Equation
1
The quiz next week will be given during your recitation. It will cover material starting with section 10.7.
First Midquarter Exam Monday, Jan 29 6:30-7:48 pm Rooms TBA Chaps 10, 11, 13
Dr. Zellmer's web site has very useful information on BP data and the
First Mid-quarter Examination MQ-1 on Monday, Jan. 29 at 6:30 pm Covering Chapters 10, 11, and 13 room TBA
For students with a scheduled-class conflict with the first Mid-Quarter Exam:
(1) Send me an email today with a copy of your class schedule, and (2)
First Mid-quarter Examination
MQ-1 on Monday, Jan. 29
at 6:30 pm Covering Chapters 10, 11, and 13 room TBA
For students with a scheduled-class conflict with the first Mid-Quarter Exam:
(1) Send me an email today with a copy of your class schedule, and (2)
Demo today ?
1
Colloids
Hydrophilic and Hydrophobic Colloids Focus on colloids in water. "Water loving" colloids: hydrophilic. "Water hating" colloids: hydrophobic. Molecules arrange themselves so that hydrophobic portions are oriented towards each other
Demo today ?
Colloids
Hydrophilic and Hydrophobic Colloids Focus on colloids in water. "Water loving" colloids: hydrophilic. "Water hating" colloids: hydrophobic. Molecules arrange themselves so that hydrophobic portions are oriented towards each other.
Quiz #4 Next Week (Feb 12-16)
Covers sections 14.5-14.7
During lectures next week, we will complete ALL OF Chapter 15 and parts of Chapter 16! The Second Midquarter Exam will cover Chapters 14, 15, and 16.1-16.3
Week six, a continuation of
Chapter 14
14.1
Quiz #4 Next Week (Feb 12-16)
Covers sections 14.5-14.7
During lectures next week, we will complete ALL OF Chapter 15 and parts of Chapter 16! The Second Midquarter Exam will cover Chapters 14, 15, and 16.1-16.3
Week six, a continuation of
Chapter 14
14.1
LAB INSTRUCTOR
LOCATION
170 - 209 W.18TH AVE. 170 - 209 W.18TH AVE. 250 KNOWLTON HALL 250 KNOWLTON HALL 250 KNOWLTON HALL 250 KNOWLTON HALL 103 KOTTMAN HALL 103 KOTTMAN HALL 103 KOTTMAN HALL 103 KOTTMAN HALL 1180 POSTLE HALL 1180 POSTLE HALL 1180 POSTLE H
16.1 16.2
Acids and Bases: A Brief Review Bronsted-Lowry Acids and Bases
H+ in water, Proton-transfer, Conjugate acids and bases, Relative strengths
Quiz number 5 will be given in recitation next week, Feb 26-Mar 2 on the first part of Chapter 16, to be c
Quiz number 5 will be given in recitation next week, Feb 26-Mar 2 on the first part of Chapter 16, to be covered in lectures this week.
16.1 16.2
16.3 16.4
Acids and Bases: A Brief Review Bronsted-Lowry Acids and Bases
H+ in water, Proton-transfer, Conjug
Makeup Midquarter Exams Wed., Mar 7 5:30-7:20 pm 1000 McPherson You MUST Sign up in 100 CE Please do so as soon as possible, but no later than Friday, Mar 2. Final Exams for Chem 122 - Mathews 2:30 Class: Thursday, Mar. 15 at 1:30 in (TBA) 6:30 Class: Tue
Makeup Midquarter Exams Wed., Mar 7 5:30-7:30 pm 1000 McPherson You MUST have Signed up in 100 CE
Chapter 17 17.1 17.2
Additional Aspects of Aqueous Equilibria
17.3
Final Exams for Chem 122 - Mathews 2:30 Class: Thursday, Mar. 15 at 1:30 (TBA) 6:30 Class:
Your tables need to have units and the correct number of s.f. Ive explained in the Helpful
Tidbits section of the class web page how to do this (by formatting the cells). You will need to
use scientific notation for the 1/[Cr3+]. Please look at the follow
Remember, graphs 3 and 4 (first and second order plots) should be on separate pages. Ive put these drawings
on a single page just to give an idea of what each should look like. In the first example the graphs show the
reaction is first order (1st-order pl
Some Useful Information Avogadro's number = 6.022 x 1023 gas constant, R = 8.314 J/mol-K R = 0.08206 L-atm/mol-K van der Waals Equation:
n 2a P + 2 (V - nb) = nRT V
Clausius Clapeyron Equation
ln P = -
H vap 1 +C R T
or
H vap 1 P 1 ln 2 = - - R T2 T1 P
Some Useful information
gas constant R = 0.08206 L-atm/mol-K = 8.314 J/mol-K for water at 25 oC Kw = 1.00 x 10-14 Arrhenius equation,
ln k = ln A -
Ea RT
The quadratic equation has the solutions
ax 2 + bx + c = 0
- b b 2 - 4ac x= 2a
From the XRD Lab:
n =
THE MEAN WAS 115.00 (65.71%)
THE STANDARD DEVIATION WAS 31.21, 453 students scored
THE POSSIBLE RANGE WAS FROM 0.00 TO 175.00
THE ACTUAL RANGE WAS FROM 24.00 TO 175.00 (13.7% TO 100.0%)
High: 175
Low: 24
Mean 115 (65.71 %)
DISTRIBUTION OF SCORES
0.00 - 9.
MQ-1 122, WI 07:
THE MEAN WAS
THE MODE WAS 95.00 WITH 10 STUDENTS.
THE MEDIAN WAS 112.50
THE STANDARD DEVIATION WAS 29.35
112.00 (64.00%)
High: 175
Low 38
N = 472
THE POSSIBLE RANGE WAS FROM 0.00 TO 175.00
THE ACTUAL RANGE WAS FROM 38.00 TO 175.00 (21.7%
The quiz next week will be given during your recitation. It will cover material starting with section 10.7.
First Midquarter Exam Monday, Jan 29 6:30-7:48 pm Rooms TBA Chaps 10, 11, 13
Dr. Zellmer's web site has very useful information on BP data and the
Question 13.32 Sorry I missed the point about partial pressures during our help session on Saturday, but here's the solution to this problem. The information about sea level data is used to get the mole fraction of oxygen in the air: Since PO2 = 0.21 atm