Question

An aq solution of ethanol in water is 1.54m . Calculate the mass of ethanol in 250g of solvent

Answer 1

Molality = no.of moles of solute / mass of solvent *1000
Molality= mass of solute / molar mass /mass of solvent * 1000
1.54=mass of ethanol/ 46.06* 100/25
1.54*46.06*25/100=mass of ethanol
=17.73g

Answer 2

Answer:

Hope this helps you........