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Topic: endothermic or exothermic  (Read 3689 times)

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Offline nickt

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endothermic or exothermic
« on: August 26, 2007, 06:06:55 AM »
i had to boil distilled water and record the boiling point, i then had to add a dessertspoon of NaCl repeated 5 times and record corresponding temperatures. The temperature increased by 2 degrees after adding each spoon of salt. Is this endothermic or exothermic??? The more i read the more confused i get

Offline Borek

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Re: endothermic or exothermic
« Reply #1 on: August 26, 2007, 06:14:40 AM »
Endotermic/exotermic refers to PROCESS, your question - as posted - doesn't make sense.
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Offline nickt

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Re: endothermic or exothermic
« Reply #2 on: August 26, 2007, 06:24:43 AM »
OK. Y did the temp of the water increase

Offline vhpk

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Re: endothermic or exothermic
« Reply #3 on: August 26, 2007, 06:54:36 AM »
You can explain this based on Raoult's law
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Offline Borek

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Re: endothermic or exothermic
« Reply #4 on: August 26, 2007, 07:11:15 AM »
OK. Y did the temp of the water increase

Do you mean boiling point?
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