How can I determine the % of alcohol in a distillate with a density of 0.923 g/mL and the following table
Density Percent
0.954 30%
0.935 40%
0.914 50%
0.891 60%
0.868 70%
0.844 80%
2007-01-19 06:57:53 · 3 answers · asked by Cin 1 in Science & Mathematics ➔ Chemistry
Density of the alcohol distillate is decreasing with increasing alcohol concentration. Since your unknown has a density of 0.923 g/ml, it falls between the 40% and 50% solutions. If you plotted the known values on a graph, you could calculate the equation of the curve (y = mx +b) and determine the exact amount of alcohol present by plugging 0.923 in as a y value.
W/o doing the calculation, I’d estimate the unknown value to be ca. 46-47%
2007-01-19 07:06:51 · answer #1 · answered by Anonymous · 0⤊ 0⤋
what I would do is put that data into an excel graph, find a best fit line and then solve for 0.923g/mL
the above answer will work but with excel they will give you a polynomial answer which will be much more accurate than a straight line (y=mx+b).
2007-01-19 15:25:05 · answer #2 · answered by fleisch 4 · 0⤊ 0⤋
you measure the density by measuring the mass of a known volume. use a volumetric to be exact
2007-01-19 15:02:29 · answer #3 · answered by shiara_blade 6 · 0⤊ 0⤋