Asha Dorsey
June 2, 2014
Gravimetric Determination of ClDescription:
The purpose of this experiment was to determine the chloride content in an unknown
sample by precipitating silver chloride with added silver nitrate. The precipitate was then filtered,
d
Asha Dorsey
June, 02, 2014
EDTA Titration of Ca2+ and Mg2+ in Natural Water
Description:
The purpose of this experiment was to determine water hardness due to Ca2+ and
Mg2+.
Titration: Ca2+ + H2Y2- CaY2 + 2H+
Ca2+ + MgY2 CaY2 + Mg2+
End Point: Mg2+ +HIn2-
Computing Mean, Standard Deviation, Coefficient Variation and Confidence Interval
Data=x
17.4
18.1
18.2
17.9
17.6
Sum
89.2
Mean
17.84
Standard Deviation
0.33615473
Coefficient of Variation
1.88427537
Conf. Interval. At 95% Confid. Lev. 0.41792564
Sum
Mean
Use of the Analytical balance, Pipet, and Buret; and Statistical Analysis
Description:
Raw Data:
Table 1:
Mass of the Crucible and Crucible Cover
Trial #
Mass of cover (g)
Mass of crucible (g)
Mass of crucible and cover (g)
1
8.4940
17.5411
26.0349
2
8.49