What volume and mass of steam at 100 Celsius and 760. torr (or 1 atm) would release the same amount of energy as heat during condensation as 65.5cm^3 of liquid water would release during freezing?

Question

anonymous · Answer

My chemistry teacher is never present and he's giving us a test on Thursday. He doesn't look for answers; he looks for work. So, I'm completely lost and need to know how to do this.

anonymous · Answer

First we find the joules released from freezing the water. q=mass(Heat of fusion)$$q=65.5g({333.55J \over g})= 21847J \ of \ heat\ released$$ Then we also know that the heat of vap is 2257 j per gram. Therefore$${21,847J(g) \over {2557J}}= $$That will give you the grams of steam that, if condensed, would release the same amount of heat as 65.5g of ice being formed.The heat of fusion and vap should be given on a test. I would then use the ideal gas law to find volume of steam.$$PV=nRT$$$$v={nRT \over P}$$ You have everything to find V. I will confirm your answers if you post them on here.

anonymous · Answer

Thank you! I'll have to work them out later, but regardless, thank you for the taking the time to answer.

anonymous · Answer

Glad I could help.