Ok, so in CHM2045 we are on Clausius-Clapeyron's equation. Can someone explain to me how it works, I understand how to use it, but I want to know why it works, the relationships between it all. Thank you :)

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anonymous · Answer

|dw:1352167933039:dw| Because of the equation, you can see the hotter the system, the more vapor you will get; hence more vapor pressure. Mathematically, more temp. means 1/ T2 - 1/T1 will be more negative. So the product of the right side of the equation is more negative. If you find exponent of both side, P1/P2 will be smaller than 1, meaning P2 is larger than P1. The same applies when you use heat of fusion which is when a solid form a liquid. More temperature, more pressure.