Elizabeth Lor, Sarah Dague, Syelee Doshi, Eric Holleran
January, 27th 2014
The purpose of this lab was to test the chemical bonding of six given compounds by
determining if it was an ionic or covalent bond.
The six comp
The Hydrochloric Acid Mystery
Elizabeth Lor and Chris Thai
March 26th, 2014
The purpose of this lab was to find the molarity of Hydrochloric Acid per Liter.
The average morality of Hydrochloric Acid in this lab was .53 moles, found by u
Pentaamminechlorocobalt III chloride, [Co(NH3)5Cl]Cl2, was synthesized by
reacting concentrated ammonia, Cobalt (II) Chloride Hexahydrate, 30% H2O2, and
concentrated HCl together.
Coordination chemistry is the study of compounds that for
The average molarity of a NaOH solution was determined to be 0.0871 M NaOH.
The average molarity of a NaOH solution determined by the class was 0.0868 M NaOH
with a standard deviation of 0.00320 M NaOH. This was done through titration and the
The composition of unknown mixture #1 was determined to be Cu+2 and Fe+3. The
composition of unknown mixture #2 was determined to be Co+2 and Cu+2. These
compositions were determined through paper chromatography of known metallic cations.
The percent CaCO3 in a heterogeneous mixture was determined to be 31% with a
percent error of 11%. The molar volume of CO2 gas at 273 K and 760 mm Hg was
determined to be 25 L with a percent error of 13%. These were determined by reacting
The molar mass of the vapor of a volatile liquid was determined to be 58 g/mol
with a percent error of 33%. The class average for the molar mass of the vapor of a
volatile liquid was determined to be 76 g/mol with a percent error of 12%. The cla
The freezing point depression constant Kf of paradichlorobenzene (PDB) was
determined to be 11 C/m with a percent error of 44% from the literature value of 7.57
C/m (Lide 2001). The freezing point depression constant Kf of PDB was determined by
The average molar heat of a solution for NH4Cl was determined to be 17 kJ/mol
with a percent error of 15% from the literature value of 14.78 kJ/mol (Lide, 2001). The
average molar heat of a solution for NH4Cl was determined by the class to be 14
The limiting reactant in a salt mixture was determined to be BaCl2 2H2O. The percent
composition of each substance in that mixture was determined to be 53.28% BaCl 2
2H2O 0.03% and 46.72% Na3PO4 12H2O 0.03%. The percent error of each
The average percent chloride in samples of AgCl was determined to be 80.32% Cl-. The
average percent chloride determined by the class was 62.42% Cl-. The standard deviation
for the class average was determined to be 3.680% Cl-. This was determin
The Kc of Fe3+(aq) + SCN-(aq) FeSCN+2(aq) was determined to be 150 M-1 at 21C
with a percent error of 6.3% from the class average of 160 M-1 at room temperature. The
Kc value was determined through chemical equilibrium calculations.