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Phase change equation

Posted: Sun Feb 10, 2019 7:01 pm
by Mya Majewski 1L
For 6th edition 8.85 or a phase change in general, do you use q=nDeltaH or deltaH=nDeltaH because for this phase change it uses deltaH=n x deltaHfus?

Re: Phase change equation

Posted: Sun Feb 10, 2019 7:51 pm
by Megan_Ervin_1F
When the temperature is rising you need to use q=mcT (This is on the slanted lines of the heating curve)
When the temperature is constant and the substance is undergoing a phase change you use: mass X enthalpy