Question

Calculate the molality, molarity, and mole fraction of FeCl3 in a 29.5 mass % aqueous solution...

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

Homework Answers

Answer #1

let us assume we had 100 g solution

volume fo solution = mass /density = 100/1.28 = 78.125 ml = 0.078125 L

29.5 % mass fraction means we have 29.5 g FeC3 in 100 g solution

FeCl3 moles = mass of FeCl3 / Molar mass of FeCl3 = 29.5 /162.2 = 0.1819

solvent mass = 100-29.5 = 70.5 g = 0.0705 kg

water moles = mass of water / molar mass of water = 70.5/18 =3.917

Mol fraction of FeCl3 = moles of FeCl3 / total moles of solution = ( 0.1819/0.1819+3.917) = 0.04438

FeCl3 molality = moles of solute / solvent mass in kg = 0.1819/0.0705 = 2.58

Molarity = moles of solute / solution vol in L = 0.1819 /0.078125 = 2.33

Know the answer?
Your Answer:

Post as a guest

Your Name:

What's your source?

Earn Coins

Coins can be redeemed for fabulous gifts.

Not the answer you're looking for?
Ask your own homework help question
Similar Questions
Calculate the molality, molarity, and mole fraction of FeCl3 in a 23.0 mass % aqueous solution...
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=___
An aqueous solution contains 4.5 % NaCl by mass. calculate molality. calculate mole fraction
An aqueous solution contains 4.5 % NaCl by mass. calculate molality. calculate mole fraction
calculate the molarity of a 22.09 mass% aqueous solution of FeCl3. The density of the solution...
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.
Calculate the molarity, molality, and mole fraction of a solution created by mixing 500.0 mL of...
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.
the mole fraction of sucrose in an aqueous solution is 0.100. Calculate the molality of sucrose...
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
1. The mole fraction of an aqueous solution of lithium sulfate is 0.297. Calculate the molarity...
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.
An aqueous solution contains 25% HCl by mass. How do I calculate the molality and mole...
An aqueous solution contains 25% HCl by mass. How do I calculate the molality and mole fraction of the solution.
An aqueous solution is 8.00% ammonium chloride, NH4Cl, by mass. The density of the solution is...
An aqueous solution is 8.00% ammonium chloride, NH4Cl, by mass. The density of the solution is 1.023 g/mL. What are the molality, mole fraction, and molarity of NH4Cl in the solution?
4. Calculate the mole fraction of phosphoric acid (H3PO4) in a 25.4% (by mass) aqueous solution....
4. Calculate the mole fraction of phosphoric acid (H3PO4) in a 25.4% (by mass) aqueous solution. (Assume 500 mL of solution.) Please show work
An aqueous solution contains 4.3% NaCl by mass. Part A Calculate the molality of the solution....
An aqueous solution contains 4.3% NaCl by mass. Part A Calculate the molality of the solution. Express your answer using two significant figures. Part B Calculate mole fraction of the solution. Express your answer using two significant figures.
ADVERTISEMENT
Need Online Homework Help?

Get Answers For Free
Most questions answered within 1 hours.

Ask a Question
ADVERTISEMENT