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
based on percentage problems
Should slurry pipes be sloped during horizontal runs?
How to size the cooling tower sump / basin for any given circulation rate? What is the guideline?
Explain what are flameless oxidizers?
Explain how can you determine the proper pipe thickness for a slurry line?
What are the advantages and disadvantages of using gear pumps?
why screw compressor use for ammonia compression?
testing formula for oxygen by ammonium chloride,ammonium hydroxide and copper
What are the frequently asked technical questions in chemical engineering during PI?
What is the purpose of capacitor?
can anyone send me the written test paper of Indian oil corporation ltd. My email id is pratuljakhmola@yahoo.com
What is the ignititon temprecher of Diesel,Petrol&Carosion oil.
have any one question paper of institute of plasma research center for aptitute as well as technical?
What do you understand by wet bulb globe temperature?
What is the significance of the minimum flow required by a pump?