Grossmont College Unknown Acid Lab Report

Qualitative Analysis: Identifying an Unknown AcidName
Measuring Mass of Monoprotic Unknown Acid
Trial 1
Trial 2
Trial 3
Mass of unknown acid
g
g
g
Concentration of NaOH
M
M
M
Initial volume of NaOH
mL
mL
mL
Final volume NaOH
mL
mL
mL
Average Molar Mass Unknown
Standard deviation
0 g/mol
0
Proposed Literature Value Molar Mass
0 g/mol
Percent error from known
0%
Measuring the Melting Point
Melting point range unknown acid Trial 1
to
o
C
Trial 2
to
o
C
Trial 3
to
o
C
to
o
C
Average Melting Point Range
Proposed Literature Melting Point
Measuring the pKa
Trial 1
Trial 2
Mass of unknown acid
g
pH unknown
Average pKa Value
Standard deviation
0
0
Proposed Literature Value pKa
0
Percent error from known
0%
Proposed Identity of Acid
Score
molar mass accuracy
/25
Trial 3
g
g
Qualitative Analysis: Identifying an Unknown Acid – Calculation Sheet
Name
0
Measuring Mass of Monoprotic Unknown Acid
Trial 1
Trial 2
Trial 3
Mass of unknown acid
0g
0g
0g
Concentration of NaOH
0M
0M
0M
Initial volume of NaOH
Final volume NaOH
0 mL
0 mL
0 mL
0 mL
0 mL
0 mL
Volume NaOH
mL
mL
mL
Moles Unknown Acid
mol
mol
mol
Molar mass Unknown Acid
g/mol
g/mol
g/mol
Average Molar Mass (AKA GMM)
g/mol
Standard Deviation Molar Mass
g/mol
Proposed Literature Value Molar Mass
g/mol
% error Molar Mass
%
Measuring the pKa
Trial 1
Mass of unknown acid
Trial 2
0g
Trial 3
0g
0g
Volume of titration (equivalence point)
mL
mL
mL
Volume of half-equivalent point
mL
mL
mL
pH value
0
0
pKa Value
Average pKa Value
Standard deviation
Proposed Literature Value pKa
% error pKa
%
0