Absolute or 100% ethanol is produced from a mixture of 95% ethanol and 5% water using...

Absolute or 100% ethanol is produced from a mixture of 95% ethanol and 5% water using the Keyes distillation process. A third component, benzene, is added to lower the volatility of the alcohol. Under these conditions, the overhead product is a constat-boiling mixture of 18.5% ethanol, 7.4% water and 74.1% benzene. Use the following data to calculate the volume of benzene that should be fed to the still in order to produce 250 litres of absolute ethanol: density of 100% ethanol = .785g/cm3 and density of benzene = .872 g/cm^3

Expert Solution

Amanda K answered 1 year ago

Give reasons why or why not its possible to remove all water from an ethanol-water mixture...

Give reasons why or why not its possible to remove all water from an ethanol-water mixture using distillation.

The ethanol-water mixture is separated on a distillation column. Feed contains 20% ethanol and 1000 kmol...

The ethanol-water mixture is separated on a distillation column. Feed contains 20% ethanol and 1000 kmol / hour speed is entering the system. The feed temperature is 30ºC and its enthalpy is 15kcal / kg. Saturated feed steam enthalpy 485 kcal / kg and saturated feed liquid enthalpy 70kcal / kg. Distillate has at least 80% ethanol and 2% ethanol concentration of the sub-product is required to be. The feedback / distillate ratio is 5/3. System pressure is 1 atm....

A pharmaceutical product is crystallized and washed with absolute ethanol. A 100 kg batch of product...

A pharmaceutical product is crystallized and washed with absolute ethanol. A 100 kg batch of product containing 10% ethanol by weight is to be dried to 0.1% ethanol by weight by passing 0.2 m3/min of 50�C nitrogen through the dryer. Estimate the rate (mol/min) that ethanol is removed from the crystals, assuming that ethanol exerts the same vapor pressure as if it were pure liquid. Based on this assumption, estimate the residence time for the crystals in the dryer. The...

After fermentation, a mixture of ethanol and water is sent to a small distillation column. At...

After fermentation, a mixture of ethanol and water is sent to a small distillation column. At the top of the distillation column, a 95% ethanol solution at 65°C is produced at a flow rate of 3.5 kg/s. Your job is to design a double-pipe heat exchanger that will cool the 95% ethanol mixture to 40°C by using cooling water that is available at 10°C. Assume an outlet temperature of the cooling water of 55°C, and only use Schedule 40 pipe...

1. A mixture of ethanol (ethyl alcohol, C2H6O) and water contains 70.0% water by mass. Assuming...

1. A mixture of ethanol (ethyl alcohol, C2H6O) and water contains 70.0% water by mass. Assuming volume additivity of the components, estimate the specific gravity of the mixture at 20 oC. What volume (in liters) of this mixture is required to provide 100 mol of ethanol? Molecular weight and density of ethanol are 46.07 and 789g/L, respectively. 2. A gas stream contains 18.0 mole% hexane and the remainder nitrogen. The stream flows to a condenser, where its temperature is reduced...

If a mixture of water-ethanol containing a significant amount of methanol is being distilled (separation by...

If a mixture of water-ethanol containing a significant amount of methanol is being distilled (separation by VLE), can we state that the methanol is not a problem because it boils off first?

An experiment studied the efficacy of using 95% ethanol or 20% bleach as a disinfectant in...

An experiment studied the efficacy of using 95% ethanol or 20% bleach as a disinfectant in removing bacterial and fungal contamination when culturing plant tissues. The experiment was repeated 15 times with each disinfectant, using eggplant as the plant tissue being cultured. Five cuttings per plant were placed on a petri dish for each disinfectant and stored at 25°C for four weeks. The observation reported was the number of uncontaminated eggplant cuttings after the four-week storage. Disinfectant 95% Ethanol 20%...

A liquid mixture containing ethanol (55.0wt%) and the balance water enters a separation process unit at...

A liquid mixture containing ethanol (55.0wt%) and the balance water enters a separation process unit at a rate of 90.5 kg/s. A technician draws samples of the two product streams leaving the separator and analyzes them with a gas chromatograph, obtaining values of 86.2wt% ethanol (product stream 1) and 10.9% ethanol (product stream 2). The technician then reads a manometer attached to an orifice meter mounted in the pipe carrying product stream 1, converts the reading to a volumetric flow...

A 5 g mixture of ethanol (C2H5OH) and methanol (CH3OH) reacts with excess oxygen. If this...

A 5 g mixture of ethanol (C2H5OH) and methanol (CH3OH) reacts with excess oxygen. If this combustion releases 125.46 kJ of heat, what mass of ethanol is in the mixture? Assume that mixing does not affect any enthalpy values. C2H5OH(l) + 3 O2(g) --> 2 CO2(g) + 3 H2O(g) -277.63 -393.5 -241.83 (kJ/mol) CH3OH(l) + 1.5 O2(g) --> CO2(g) + 2 H2O(g) -201.2 -393.5 -241.83 (kJ/mol)

Could you please provide a Material Safety Data sheet for the Ethanol/Water mixture? and the reference...

Could you please provide a Material Safety Data sheet for the Ethanol/Water mixture? and the reference of where it came from Thank you

Question