Assume that there was no human error during the performance of the lab and that
ID: 929367 • Letter: A
Question
Assume that there was no human error during the performance of the lab and that all of the equipment used was accurate. Using your value for this calculation. discuss which part(s) of the procedure and/or assumption(s) could account for the percent error you obtained for each alcohol.
% error in purity ethyl alcohol Trial # 1= 106.5 -70 = 36.5
% error in purity ethyl alcohol Trial # 2. = 97 -70 = 27
% error Isopropyl alcohol Trial # 1 = 99-70 = 29
% error Isopropyl alcohol Trial # 2 = 103.5 -70 = 33.5.
Explanation / Answer
Reading of each freezing point.
Round error when you take density or when you divide by 2.
Bad data when you record the molality. Bad data when you take the mass of the solution.