Question

If the actual density is 1.2686 g/mL and the determined density by experiment was 1.0275 g/mL, is it reasonable to conclude the obtained product was fairly pure. I am writing a lab report and these were my results and interpretation, but I am not sure if the difference between the densities (0.2411 g/mL) is too big to consider my product fairly pure?

Answer 1

That is a major error. It is not fairly pure.

Answer 2

Agreed. You do not say what the substance is or how it was made, but as the density of you material is less than that expected then contamination with water or a solvent seems likely.