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It consist of procedure, data and conclusion
Typology: Lab Reports
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In writing laboratory reports, follow the outline listed below, making sure to write reports in a concise, yet complete and clear manner.
Important Notes:
*Be sure to use third person, past tense, passive voice, and proper grammar!
e.g.-the solution was prepared by…or The solutions were made using…
**Don't use acronyms until you have first named the substance or technique and cited its acronym.
e.g. – potassium acid phthalate (KHP)
The Report
Title: List the title of the experiment as given at the top of the cover page of the laboratory procedure packet for that experiment.
Objective (or Purpose): Use a single sentence to state explicitly the specific goal of the experiment and the analytical method used.
e.g.- The objective of this experiment was to use Beer's Law to determine the concentration of Cr(III) in an unknown.
e.g. – Spectronic- 21 vis spectrometer
Procedure: Briefly but thoroughly describe the following in a general manner:
How solutions were obtained or prepared and used in analysis Amount(s) of substance(s) used Volume and concentrations of solutions if required by instructor Measurement process
Other pertinent experimental aspects
*the procedure can be in a written out or flow chart format, depending on instructor preference.
Written Out:
Standard solutions were made by appropriate dilutions of an aliquot of…
Flow Chart:
Round bottom addition
flask funnel
Data and Observations: List the data and computed results in a simple, concise, yet very clear form (usually in a well-labeled form).
Calculations- submit only one set of detailed mathematical manipulations of each type. There is no need to show every single calculation – all other values appear in data tables.
Single entry
Weight of KH 2 PO 4 = 0.4374 g
Molarity of NaOH = 0.1000 M
Measurements of a series of solutions
Cr (III) Concentration, M Absorbance
0.0100 0.
0.0200 0.
0.0300 0.
0.0500 0.
Unknown #3 0.
50 mL 3M H 2 SO 4
0.5gHgS) 4
10mL 2-methyl-3-butyn-2-ol
Heart rxn flask, stir until mercuric salt dissolves
The Writing Center Clarion University of Pa. ©