Question

Calculate the molality of a 6.55 *M* ethanol
(C_{2}H_{5}OH) solution whose density is 0.9245
g/mL.

Answer #1

Since , the molarity is the number of moles of solute dissolved in 1 litre of solvent and I have assumed the volume of the solution to be 1 litre that's why the number of moles of solute is 6.55 .

Finally calculated molality of the solution is 10.51 m .

Vodka is 25% by mass ethanol (C2H5OH) and
has a density of 0.75 g/mL. Calculate the mole fraction of each
species (water and ethanol) in solution, and the molality of the
ethanol in vodka.

1. Calculate the molality of a solution of 50mL of ethanol,
C2H5OH (density .789g.mL) which is dissolved in .25L of water
(density=1.00g/mL).
2. A solution is prepared by diluting 225mL of .1885 M aluminum
sulfate with water to a final volume of 1.450L. Calculate the
molarities of the aluminum sulfate, aluminum ions, and sulfate ions
in the diluted solutions.

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).

assume you dissolve 45.0g camphor (C10H16O) in 425mL of ethanol
(C2H5OH, has a density of 0.785g/mL) calculate the molality,
molarity, mole fraction, and mass % of camphor in this
solution.

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.

What is the molality of a 2.46 M aqueous solution of CH3OH?
(Density = 0.976 g/mL)

A solution is 40% ethanol (density = 0.789 g/mL) by volume and
60% water (density = 1.00 g/mL). If Tom Titan has 750.0 mL of the
solution, what is the mass of ethanol in solution?

Calculate the Molality of 3.75 M H2SO4(aq), sulfuric acid
solution which has a density of 1.230 g/ml

The density of a 40 wt% solution of ethanol in water is 0.937
g/mL. The density of n-butanol is 0.810 g/mL. What is the
concentration of n-butanol in ppm if you dissolve 15 μL of this
alcohol in a 40 wt% solution of Ethanol in water. The final volume
of the solution is 25 mL. Assume that the density of the ethanol
solution does not change upon dissolution of the butanol. Use the
correct number of significant figures!

What is the molality of a 2.04 M KBr aqueous solution?The
density of the solution is 1.11 g/mL.

ADVERTISEMENT

Get Answers For Free

Most questions answered within 1 hours.

ADVERTISEMENT

asked 59 seconds ago

asked 4 minutes ago

asked 4 minutes ago

asked 17 minutes ago

asked 21 minutes ago

asked 23 minutes ago

asked 24 minutes ago

asked 24 minutes ago

asked 24 minutes ago

asked 27 minutes ago

asked 39 minutes ago

asked 39 minutes ago