# Heat of Fusion Lab Help needed

1. May 29, 2004

### Quantum Foam

Hi, and thanks for looking

I'm doing a heat of fusion lab for school and I'm having trouble trying to find the equations that would solve the following:

Q (heat) released by liquid cooling down
Q (heat) absorbed by melted ice warming up
Q (heat) absorbed by ice while melting
/\ (delta or change of something) H fus of H2O.
The specific heat of alcohol

Any help would be great.

THanks again.

2. Jun 9, 2004

### lvlastermind

the specific heat of ice while melting is 2.06 J/gC
the specific heat of water is 4.18 J/gC
the heat of fusion is 334 J/g

my chem is a little rusty but isnt the delta H = to the change in temp (degrees C).

Now just set up ur problem first by writing out the knowns and unkowns.

3. Jun 10, 2004

### Gokul43201

Staff Emeritus
/\$$H_{fus}(H_2O)$$ is the same as Q absorbed by ice while melting. It is also known as the latent heat of fusion or the latent heat of melting.

It would help to know what you are trying to calculate, and from what.

These may be useful :

1. Total heat lost by A = total heat gained by B (assuming no heat escapes)
2. During heating/cooling, Q = mC/\T, m:mass, C:sp. heat cap.
3. During boiling/melting/freezing, Q = mL, L:latent heat

4. Jun 10, 2004

### Gokul43201

Staff Emeritus
The specific heat of (ethyl) alcohol is 2.45 J/gC. (Other alcohols may be different.)