Lab Report 6 –
Volumetric Determination of %CaO using KMnO
4
Name: Unknown #: Date: Standardization of KMnO
4
Solution
(by titration with standard Na
2
C
2
O
4
)
Trial #
Mass of Na
2
C
2
O
4 (g)
Titration Volume
(mL of KMnO
4
)
Molarity
(
M of KMnO
4
)
1
2
3
Average = Standard Deviation = Results -- Analysis of %CaO in Limestone Unknown
Trial #
Mass of unknown
sample (g)
Titration Volume
(mL of KMnO
4
)
Mass Percent
(% CaO)
1
2
3
Average = Standard Deviation = Calculations
Molarity of KMnO
4 solution for Trial #1 of standardization
Mass Percent CaO for Trial # 1
Photo Documentation
Photo of a representative endpoint from your standardization
Photo of a representative endpoint from your unknown analysis Conclusion:
Describe how you managed your time most effectively in this experiment (limit to one paragraph).
Let me know if anything unusual happened to affect your data; if the procedure went as expected, no need to comment.
Raw Data
– Scan or photograph your data tables and insert below, making sure TA signatures are visible.
