- #1

tyneoh

- 24

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Next question, If we would freeze a cup of water at a constant temperature, does the internal energy change? From the equation, heat is taken away from the system, but I am not too certain as to any work is done by the system. So, δu most likely <0

Alternatively, u = sum of molecular kinetic and potential energy. since temperature is constant, kinetic energy is constant, but I am sure that potential energy has increased since water molecules form more bonds with and come close to each other in the solid state. Here, I would think that δu>0. Then, I seem to contradict myself LOL. Perhaps someone can point out where I got my assumptions wrong?

Thank you for your time, have a great day.