# Phase State Change Questions

1. Dec 15, 2013

### Speedking96

1. The problem statement, all variables and given/known data

How would the state change graph of some matter undergoing deposition look like?

2. The attempt at a solution

I would assume that since it is undergoing deposition, it would just be a slope from the gaseous state to the liquid state. However I am not sure of this? How would one then calculate the heat released during this process, is it at all possible?

2. Dec 15, 2013

### Staff: Mentor

You mean temperature vs time plot?

3. Dec 15, 2013

### Speedking96

Yes. Precisely a heat added vs. temp plot.

4. Jan 6, 2014

### Speedking96

Ok. So this is an example of a heat added vs. temp diagram of a sublimation phase change from my workbook.

They ask to choose the one on the left(a) or right (b).

I think it is (b) because during the phase change, the temp would continually rise, no?

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5. Jan 7, 2014

### Staff: Mentor

Google for thermogravimetric curves/analysis.

6. Jan 7, 2014

### Staff: Mentor

So you mean water boils between - say - 90 and 110°C? I was always taught water boils at 100.