CHEMICAL MATERIAL BALANCE – EXAMPLE 2.2 : Three hundred gallons of a mixture containing 75.0 wt % ethanol and 25 wt % water (mixture specific gravity = 0.877) and a quantity of a 40.0 wt % ethanol - 60 wt % water mixture (specific gravity = 0.952) are blended to produce a mixture containing 60.0 wt % ethanol. The specific gravity of a substance is the ratio of density of a substance compared to the density of water. The symbol of weight percent is wt %. (a) Estimate the specific gravity of the 60 % mixture by assuming that y = mx c where y is wt % ethanol, x is mixture specific gravity. Values for m and c are constants. (b) Determine the required volume of the 40 % mixture.
Answer Posted / kangchuentat
CHEMICAL MATERIAL BALANCE – ANSWER 2.2 : (a) Let X = specific gravity of the 60 % mixture. By interpolation for a straight line with constant m as gradient, then (75 - 40) / (0.877 - 0.952) = (60 - 40) / (X - 0.952). Then 35 / (-0.075) = -466.67 = 20 / (X - 0.952). X = -0.0429 + 0.952 = 0.9091. (b) Let V = the required volume of the 40 % mixture. Mass of ethanol in 75 % mixture + Mass of ethanol in 40 % mixture = Mass of ethanol in 60 % mixture. Then, 300 (0.877) (0.75) + V (0.952) (0.4) = (V + 300) (0.9091) (0.6). Then 197.325 + 0.3808 V = 0.5455 V + 163.638. V = 204.53 gallons.
Is This Answer Correct ? | 0 Yes | 0 No |
Post New Answer View All Answers
Why is double the amount of gas collected in one of the test tubes in electrolysis of water than th amount collected in the other? Name this gas?
what is R1,R2,R3, R4........?
Are you having any experience in antibody designing?
What is difference between overall heat transfer coefficient & individual heat transfer coefficient?
When should one be concerned with the tube wall temperature on the cooling waterside of a shell and tube exchanger?
What are the disadvantages of using gear pumps?
Explain what types of valves are recommended for slurry services?
Are some heat transfer services more prone to tube vibration that others for a shell and tube exchanger?
In which state sulphur exists at 40 degrees temperature and 40 atmospheric pressure in natural gas having sulphur composition 0.1 ppm?
Hi.. Me going to tke test for management trainee(technical) Post I am an chemical engineering student . Can u guide how to prepare for this test.Can u send me test paper pattern..?
What is the basic difference between dispersion & distribution in any polymer blend or alloy??
what is the hearth and arch pressure in furnace?
Are there flow velocity restrictions to avoid static charge build up in pipelines?
What particle sizes are electrostatic precipitators used to remove?
Hi, I am in need of interview questions from Engineers india limited in chemical engineering.if any one has kindly post it to me soon.