Homework Solution: A 95.0 wt% solution of ethanol, C2H5OH (mw = 46.07) in water has a density of…

    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

    Expert Answer

    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