Acid Analysis by Titration Determination of Molecular Weight

Table 1. Data from standardization of NaOH titrant with KHP.

Trial	Mass KHP (g)	Initial Burette Volume (mL)	Finial Burette Volume (mL)	NaOH Concentration (M)
1	0.1133	0.23	20.15	0.02785
2	0.1148	20.15	40.21	0.02802
3	0.1118	20.97	40.38	0.02820
4	0.1104	1.48	20.97	0.02774

The average NaOH concentration was calculated to be 0.02795 M with a standard deviation of 0.00020.

Table 2. Data from molar mass determination of unknown number 519A.

Trial	Mass KHP (g)	Initial Burette Volume (mL)	Finial Burette Volume (mL)	Molar Mass (g/L)
1	0.2175	0.48	18.70	426.7
2	0.2037	18.70	35.31	438.7
3	0.1982	0.28	16.63	433.7

The average molar mass the unknown was determined to be 433.0 g/L with a standard deviation of 6.1.