Assume you have available 2.50 L of a solution (d=0.9767 g/mL) that is 13.8% ethanol (C2H5OH), by mass. From this solution you would like to make the maximum quantity of ethanol-water antifreeze solution that will offer protection to -2.0 degrees C. What mass of water would you add?
(Kf of water= 1.86)
ΔT= - Kf *m