Describe the process of heating water at 1 atm pressure for -10°C to 150°C, at constant pressure. What happens to the water as heat is added? Show the process on a Tv diagram, relating the description to the diagram.

What will be an ideal response?


(a) The water will initially be ice, and the ice will warm from -10°C to 0°C.

(b) At 0°C, the ice will melt until it is all liquid water.

(c) The liquid water will warm, with little volume change, to 100°C.

(d) At 100°C, the water will evaporate into water vapor.

(e) The water vapor will continue to warm to the end point of 150°C. There will be little volume change for parts (a)-(c), but large volume changes for (d) and (e).



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