A solution contains 0.0653g of compound in 8.31g of ethanol. The molarity of the solution is 0.0368m. Calculate the molecular weight of the compound
4 answers
The molarity of the solution can't be 0.0368 m. It can be 0.0368 molar or it can be 0.0368 molal. Which is it.
sorry my fault it is suppose to be molality
I think you MUST have meant molality.
molality = mols/kg solvent
0.0368 m = mols/0.00831 kg.
Solve for mols = 0.0368 x 0.00831
mols = g/molar mass
You know mols and g, solve for molar mass.
molality = mols/kg solvent
0.0368 m = mols/0.00831 kg.
Solve for mols = 0.0368 x 0.00831
mols = g/molar mass
You know mols and g, solve for molar mass.
214 g/mol
2 answers