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Author Topic: Latent heat  (Read 641 times)

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s22345

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Latent heat
« on: April 18, 2017, 01:51:34 AM »

A vessel weighing 80 g (S.H.C.= 0.8 J/g) contains 250 g of water at 35 C. Calculate the amount of ice at 0 C, which must be added to be added to it, so that the final temperature is 5 C. (Latent heat of ice= 340 J/g).
« Last Edit: April 18, 2017, 03:51:25 AM by Borek »
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Borek

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Re: Latent heat
« Reply #1 on: April 18, 2017, 03:51:12 AM »

You have to show your attempts at solving the problem to receive help, this is a  forum policy.

Please read the forum rules.
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s22345

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Re: Latent heat
« Reply #2 on: April 20, 2017, 12:30:36 AM »

can we use the first law of thermodynamics here?
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Borek

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Re: Latent heat
« Reply #3 on: April 20, 2017, 04:58:03 AM »

Every heat balance problem is the application of the first law of thermodynamics. But no need for big guns here, it is just about writing a correct heat balance equation.
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Enthalpy

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Re: Latent heat
« Reply #4 on: April 21, 2017, 01:03:10 PM »

Don't forget that the added ice brings additional heat capacity.
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