Question

The mole fraction of an aqueous solution of sodium acetate is
0.519. Calculate the molarity (in mol/L) of the sodium acetate
solution, if the density of the solution is 1.11 g
mL^{-1}.

Answer #1

1. The mole fraction of an aqueous solution of lithium sulfate
is 0.297. Calculate the molarity (in mol/L) of the lithium sulfate
solution, if the density of the solution is 1.39 g mL-1.
2. Determine the mole fraction of potassium permanganate in a
6.65 M aqueous solution of potassium permanganate. The density of
the solution is 1.39 g mL-1.

Calculate the molality, molarity, and mole fraction of FeCl3 in
a 23.0 mass % aqueous solution (d = 1.230 g/mL). molality=____m
molarity=____M mole fraction=___

1) The mole fraction of sodium phosphate, Na3PO4, in an aqueous
solution is 5.62×10-2 . The percent by mass of sodium phosphate in
the solution is %.
2)An aqueous solution is 36.0 % by mass
hydrochloric acid, HCl, and has a
density of 1.18 g/mL.
The mole fraction of hydrochloric acid in the
solution is
.

Calculate the molality, molarity, and mole fraction of FeCl3 in
a 29.5 mass % aqueous solution (d = 1.280g/mL)

Question 2
An aqueous solution of sodium carbonate,
Na2CO3 (MM = 105.99 g/mol) has a
density of 1.43 g/mL and a molality of 14.2 m (or mol/kg).
Calculate (i) the molarity of the solution, and (ii) the mole
fraction of Na2CO3.

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.

Calculate the mole fraction of ethyl acetate, in a toluene-ethyl
acetate mixture if you mix 1 mL of ethyl acetate and 1 mL of
toluene. The density of ethyl acetate (C4H8O2) is 0.898 g/mL; the
density of toluene (C7H8) is 0.867 g/mL.

calculate the molarity of a 22.09 mass% aqueous solution of FeCl3.
The density of the solution is 1.280 g/mL. the mm of FeCl3 is
162.20 g/mol.

the mole fraction of sucrose in an aqueous solution is 0.100.
Calculate the molality of sucrose in the solution. the molar mass
of sucrose is 342.3 g/mol

what is the concentration in molarity of an aqueous solution
of potassium nitrate that has a mole fraction of KNO3 equal to
0.195? the density of the solution is 1.36 g/mL

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