Question

A solution is made by mixing 36.0 mL of ethanol, C2H6O, and 64.0 mL of water. Assuming ideal behavior, what is the vapor pressure of the solution at 20

Answer #1

A solution is made by mixing 49.0 mL of ethanol, C2H6O, and 51.0
mL of water. Assuming ideal behavior, what is the vapor pressure of
the solution at 20 °C?

A solution of ethanol (C2H6O) in water is sometiems used as a
disenfectant. 1.00 L of this solution contains 553 g of ethanol and
335 g of water. What is the mole fraction of ethanol in this
solution? *show all work and calculations

Calculate the molarity, molality, and mole fraction of a
solution created by mixing 500.0 mL of ethanol (C2H6O / d = 0.789
g/mL) with 4.267 g of benzene (C6H6 / d = 0.876 g/mL). Assume the
density of the solution is the same as ethanol.

If 12 mg of ethanol are dissolved in 25 mL of water
a. what are the mol fractions of the two liquids in the mix
b.the vapor pressures of pure ethanol and water at 25 C are
respectively 58.9 and 23.8 Torr. Calculate the vapor pressure of
the mix, assuming ideality
c. once the liquid has reached equilibrium with the vapor, what
will the mol fraction of the two liquids in the vapor phase be?

A
solution is made by moving equal masses of methanol CH4O and
ethanol C2H6O determine the mole fraction of each component to at
least three sig. figs

3.85 g of ethanol, C2H6O, are dissolved into 200.0 g of water.
What is the molality of this solution?

What is the pH of a solution made by mixing 100.0 mL of 0.10 M
HNO3, 50.0 mL of 0.20 M HCl, and 100.0 mL of water? Assume that the
volumes are additive.
must show work

A solution of ethanol (d=0.795 g/mL) and water (H2O) is prepared
by placing 30.0 mL of ethanol in a 250.0 mL volumetric flask and
diluting with water to the flask etched mark . (a) what is the
molarity of the ethanol in this solution? (b) Next, 25.o mL of the
solution above is diluted to a final volume of 500.0 mL, what is
the new molarity of the diluted solution?

1.
Vodka is advertised to be 80 proof, which is 40% by volume of
ethanol, C2H5OH. Assuming the density of the solution is 1.0 g/mL
and the density of ethanol is 0.789 g/mL. If the solution is at
25oC, what is the vapor pressure of water over the solution?
2. Calculate the molarity and molality of a solution of 50
grams of ethanol, C2H5OH (density = 0.789 g/mL) which is dissolved
in 200 mL of water (density = 1.00 g/mL).

Ethanol and methanol form a nearly ideal solution.
(a) First of all, why is this expected?
(b) At 20 °C, the vapor pressure of ethanol is 5.93 kPa, and
that of methanol is
11.83 kPa. Calculate the mole fractions of the two components if
100 g of
each are mixed.
(c) Calculate the partial pressures and the total vapor pressure
of the solution.
(d) Calculate the mole fraction of methanol in the vapor.

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