Name: ______________________________
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pKa of Weak Acid abstract rubric (only for the pKa section of lab)
# of
Heading including name, class, date, and title
Double spaced, 12 pt font
Statement of purpose
Brief description of method used to determine [HA] & [A−] (don’t write a procedure)
Description of how AHind − A is related to [A−] & A − Aind is related to [HA]
Chemical names should be followed by the chemical formula in parentheses.
Henderson-Hasselbalch expression and number of measurements
Average pKa (from spreadsheet) w/ std. dev. (s.f.) & comparison to graphical pKa
Proper grammar and correct spelling
Follows Rules to Remember in Appendix p. Abstract 7-8
(1 pt/rule)
1. Don’t use first person or passive voice
2. Don’t start sentence with a number
3. Use past tense
4. Write units correctly
5. Be concise
6. Use of weighed
7. Don’t capitalize unnecessarily
8. Writing numbers
9. Subscripting and superscripting
10. Don’t include experimental details such as beaker sizes
2
2
5
5
10
3
3
5
5
10
Total points
points
50
points
earned