From my notes, Pressure is proportional to Temperature (Pressure's Law). I know that the boiling point of water will increase if the pressure increases, because more energy is needed to overcome the intermolecular forces of attraction between water molecules as well as to overcome the increased pressure.
For pressure affecting the melting/freezing point, my notes just say that increased pressure will cause the melting/freezing point to become lower, but they don't explain why.
For impurities, the notes only mention about the boiling point increasing and the melting/freezing point decreasing, also not explaining why.
Is there any way i can apply Pressure's Law (Pressure proportional to Temp.), Charle's Law (Volume proportional to Temp.) and Boyle's Law (Pressure inversely proportional to Volume)?
My take on pressure affecting the melting/freezing point of water is that when pressure is applied to ice, the temperature of the ice will increase (Pressure's Law). When temp. increases, it melts and the volume also decreases (Boyle's Law). So does that mean that for water to become ice again, it will have to lose more energy, thus a lower melting/freezing point? That's where I am left clueless. My understanding of the concept isn't really there yet.
As for impurities, I have really no idea how to start as my notes are just too brief and do not explain anything.
