The vapor pressure of water at 45oC is 71.88 mmHg.
What is the vapor pressure of a sugar
(C12H22O11) solution made by
dissolving 54.18 g of sugar in 85.56 g of water?
Extraction of Eugenol from Cloves
1.) Define co-distillation.
2.) What is the purpose of using steam to distill your
product
3.) Why is it important to prevent the foam from entering your
condenser?
4.) Why is it important to extract the aqueous layer 3 times
(5mL) using methylene chloride? What would happen if you extracted
one time using 15 mL of methylene chloride?
4.) Ferric (III) Chloride is a test to react with phenols. Write
the equation of eugenol...
Cyclohexane (C6H12) has a vapor pressure of 99.0 torr at 25°C.
What is the vapor pressure depression (in torr) of cyclohexane
above a solution of 10.0 g naphthalene (C10H8) in 70.0 g
cyclohexane at 25°C?
Vapor Pressure and Heat of Vaporization
a. The vapor pressure of acetone at 20° C is 185.5 mm Hg, and
the vapor pressure of water at this same temperature is 17.5 mm Hg.
Predict which of the two liquids will have a higher normal boiling
point. Use a molecular point of view to explain your
prediction.
b. Use data from the table below and make a graph of the lnP
versus the reciprocal of absolute temperature. Use the slope from...
At
25 C, the vapor pressure of pure water is 23.8 torr. What is the
vapor pressure of an aqueous solution that is 8.00% NaCl by mass?
Assume the NaCl is 100% dissociated.
The vapor pressure of pure water at 37C is 47.1 torr. What would
be the vapor pressure of an aqeous solution at 37C containing 40g
of Glucose (C6H12O6) dissolved in 200g of water?
The vapor pressure of ethanol (CH3CH2OH) at 20c is 44 mm Hg, and
the vapor pressure of Methanol (CH3OH) at the same temperature is
94 mm Hg. A mixture of 30.0 g of Methanol and 45.0 g ethanol is
prepared and can be assumed to behave ideally. Anwser the following
questions concerning this mixture.
A) Which component is more volatile?
A2) Determine the mole fraction of both components of the liquid
mixture?
B) Calculate the vapor pressure of methanol and...
The vapor pressure of ethonal (C2H5OH) is 672torr at
75°C. The vapor pressure of water is 289torr at the same
temperature.
Ethonal and water forms solution that behave like ideal solution.
Calc vapor pressure of ethonal and water above the solution at
75°C.