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Specific Latent Heat of Fusion - Two quick questions !

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1. Specific Latent Heat of Fusion - Two quick questions !
So when determining the SLF of ice we usually dry the ice, place it in a filter funnel above a beaker and heat the ice with an electric heater.

1.) Why do we wait till the ice is melting at a constant rate ?

2.) Why do we dry the ice ?

Are there any other experimental ideas that I've missed out ?
Last edited by Ari Ben Canaan; 10-05-2012 at 19:34.
2. Re: Specific Latent Heat of Fusion - Two quick questions !
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3. Re: Specific Latent Heat of Fusion - Two quick questions !
(Original post by Ari Ben Canaan)
So when determining the SLF of ice we usually dry the ice, place it in a filter funnel above a beaker and heat the ice with an electric heater.

1.) Why do we wait till the ice is melting at a constant rate ?

2.) Why do we dry the ice ?

Are there any other experimental ideas that I've missed out ?
1) So that heat is spread uniformly around the whole substance.

2) I haven't read anywhere yet about why we dry the ice, so I don't know.

You should also put some another amount of ice in the funnel and turn the heater off(before doing your actual experiment), so to make allowance for the heat gained from the surroundings.
4. Re: Specific Latent Heat of Fusion - Two quick questions !
(Original post by Zishi)
1) So that heat is spread uniformly around the whole substance.

2) I haven't read anywhere yet about why we dry the ice, so I don't know.

You should also put some another amount of ice in the funnel and turn the heater off(before doing your actual experiment), so to make allowance for the heat gained from the surroundings.
Hey ! I've created a discussion thread here : http://www.thestudentroom.co.uk/show....php?t=1996134

Check it out !

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Last updated: May 11, 2012
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