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CHEM 225 Intro to Analytical Chemistry Lab

Quiz #3 Nov 18

Mn lab results - see lab handout in notebook - due Dec 4 (Tuesday lab) or Dec 6 (Thursday lab)

Results needed:
1. Calculate the Molarity of MnO₄^- for each of the five known solutions
2. Graph of Transmittance vs Concentration MnO₄^-
3. Beer's Law Plot - Graph of Absorbance vs Concentration(M) of MnO₄^- with linear regression analysis to obtain the equation of the line (y = mx+b)
4. Use the equation of the line to obtain the concentration of MnO₄^- in your unknown samples
5. Calculate the % Mn in each of your unknown samples
6. Calculate the average %Mn
7. Calculate the molar absorptivity(ε) in M^-1cm^-1 of  MnO₄^- using A = εbC where A is the absorbance (unitless), C is the concentration in Molarity and be is the cell length which is equal to1.00 cm

 

T  or R

2:00 pm - 4:50 pm

HT 319

CHEM 100 Cultural Chemistry (non majors)

NOTE:   Lab taught by Dr. Laura Moore

EXAM II - Monday, Nov 3

For Friday, Nov 7, bring in a printout of the filtration process for the water you like to drink!

Monday, Nov 10 - Water worksheet - Do problem 3b in the Molarity section for homework for Wednesday

Concentration Worksheet

Quiz #6 - Friday, Nov 14 - Chapter 5

Homework for Monday, Nov 17 - Chapter 5: 6ab; 7; 9ab; 15abcd; 21abcde; 22abcde; 25abc

Concentration Worksheet (M, ppm, ppb)- in class

Logarithms - in-class worksheet

Logarithms - HW for Friday, Nov 21

Chapter 6 Worksheet - in-class Friday, Nov 21

HW for Monday, Nov 24 - Chapter 6 - 3ab; 6ab; 9b; 10abcdefg; 11; 12; 13bc

QUIZ - Monday, Nov 24 - ACID or BASE?
pH (pOH), logs, [H+] ([OH-])

Dec 3-  Lab #11 - Synthesis of Esters
 

W

2:00 pm - 3:50 pm (LAB)

CHEM 250 Science Seminar