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phase changes

Posted: Sun Jan 14, 2018 5:23 pm
by Belle Calforda3f
When doing problems that involve phase changes, for example changing ice to steam, how do you solve them if given two temperatures one for ice and one for steam and multiple molar heat capacities rather than one temperature?

Re: phase changes

Posted: Sun Jan 14, 2018 6:00 pm
by Morgan Baxter 1E
For ice changing to steam you have to do several calculations. First you have to calculate energy needed to bring the ice to 0 degrees Celsius. Then calculate energy needed to phase change from ice to liquid. Then you have to calculate the energy needed to bring the water from 0 degrees Celsius to 100 degrees Celsius, and then you have to calculate the energy needed for the phase change from water to steam.