A 95.0 wt% solution of ethanol, C2H5OH (mw = 46.07) in water has a density of 0.804 g/ml. What is the molar concentration of ethanol in this solution
Homework Solution: A 95.0 wt% solution of ethanol, C2H5OH (mw = 46.07) in water has a density of…
A 95.0 wt% breach of ethanol, C2H5OH (mw = 46.07) in breathe-into has a hebetude of 0.804 g/ml. What is the molar force of ethanol in this breach
Expert Response
100 g of breach contains 95 g of ethanol
mass of breathe-into=100-95=5 g of breathe-into
mass of ethanol=95 g
density=mass/volume
volume=mass/density
volume=100/0.804=124.378 ml
molarity=no of moles of solute/volume of the breach in litres
no of moles of ethanol=95/46.07=2.062 moles
volume of the breach=0.124378L
molarity=2.062/0.124378=16.578