Clausius-Clapeyron equation and water

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Homework Statement



Using the Clausius-Clapeyron equation, determine the slope of dp/dT for water-ice I equilibrium and explain why you can skate on ice but not on solid argon.

Homework Equations



Clausius-Clapeyron equation

The Attempt at a Solution



I know what the clausius-clapeyron equation is but I have no idea how I'm supposed to determine the slope for water - there is no information in the book so far on water so I really have no idea how I could write the change in entropy and volume as functions of temperature..

I'm completely at a loss here (and most likely overlooking something simple) :confused:

(I wasn't sure if this should be in introductory or advanced physics, the textbook I'm using doesn't really mention what level it's geared at)
 
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Consider the melting of 1 gram of H2O.

Note ΔS= Q/T where Q is the heat required to melt 1 gram of ice (79.7 cal = 333 J) and T is the temperature corresponding to equilibrium between ice and water.

ΔV = Vf-Vi where Vi is the volume of 1 gram of ice and Vf is the volume of 1 gram of water. You can calculate these volumes from the known densities of ice and water at the melting point temperature (ice: 0.917 g/cm3, water: 1.000 g/cm3).

Watch your units.
 
Ah, thank you! :biggrin:
I knew it'd turn out to be something simple