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Topic: Entropy change of system, surrounding and universe  (Read 2120 times)

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Offline inexile96

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Entropy change of system, surrounding and universe
« on: August 15, 2016, 09:20:40 AM »
The standard molar heat capacity of ice near 0 °C is 35.31 J K−1 mol−1 and the ∆fusion H°m of ice is 6.008 kJ mol−1.  The standard molar heat capacity of water near 0 °C is 76.02 J K−1 mol−1.  1 mole of ice at −5 °C is heated to 25 °C under a constant pressure of 1 bar via the processes below.  The ice is placed on the bench in a room at 25°C and allowed to warm up.

Calculate
The entropy change of the system.
The entropy change of the surroundings.
The entropy change of the Universe.
 
Please help Im very confused, the initial question was phrased that the heating was conducted reversily which i managed to solved it but after my lecturer modified the question in bold, i don't know how to do it.
Can anyone help

Offline orthoformate

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Re: Entropy change of system, surrounding and universe
« Reply #1 on: August 15, 2016, 04:41:56 PM »
https://www.youtube.com/watch?v=UqSTPHEojqk

watch this link, starting at 6:21.

A teacher explains a question that is very similar to your question.

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