LaSalle University
1.
APSI
AP Chemistry
Identification by precipitation reactions (Monday)
Materials: test tubes, eye droppers, beakers labeled A – G containing 0.1 M to 1
M (conc. can vary between 0.1 M and 1 M) of KNO3, AgNO3 , BaCl2 , CaCl2,
K2CrO4, (NH4)2CO3, K2SO4 , beral piptettes, small test tubes +/or well plates,
saran wrap
2.
Lab practical. Q, R, S. (Monday)
Materials: test tubes, beral pipettes, well plates +/or Saran wrap, I M solutions of
Pb(NO3)2, NaCl, K2CO3, AgNO3, BaCl2.
Label 3 Erlenmeyer flasks Q, R and S and fill with the first 3 solutions. Label
two flasks X and Y. Fill with last two solutions OR set up with test tubes (8 sets
). In first case scenario participants label their own TT and take the solutions
from the Erlenmeyer flasks.
3.
Acid/Base titration ( Tuesday)
Materials: 10 % NaOH solution, burets, phenolphthalein, 0.50 M standardized
HCl solution, a 3.0 % and 5.0 % vinegar solution. Need 20 mL samples per
titration for best results. 2 titrations per group.
4.
Acid, Base and indicators (Tuesday)
Materials: H3PO4 solution (25. mL of conc. H3PO4 diluted to 1.0 L), 0.50 M
NaOH solution, burets, bromcresol green, phenolphthalein (need 2 liters of each
solution). Need 20 mL samples for titration for best results. 4 titrations per
group.
5.
Solubility Thermodynamics (Wednesday)
Materials: 20 g solid KNO per group3, 7 thermometers, fourteen 25 by 200 mL
test tubes or 1 100-mL graduated cylinder with snap on plastic bottom, hot water
bath
6.
Oxidation / reduction titration (Thurs.)
Materials: 0.020 M KMnO4 solution, burets, distilled water, 3.0 M H2SO4, 0.10
M FeSO4 ( needs to be freshly made)., burets, beakers or Erlenmeyers (1 L of
KMnO4 and 2 L of the FeSO4 ). 10 mL sample per titration, 3 titrations per
group.
7.
% H2O2 determination (microlab with redox titration). (Thurs.)
Materials: 3 % H2O2 , 3 M H2SO4 , standardized KMnO4 solution ( approx. 4.70 g
KMnO4 dilute with distilled water to make combined weight of 220.0g. Put
actual numbers of masses used on KMnO4 bottle.) beral pipettes, small test tubes
or well plates, balance. This is done by weight.