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Savannah Mance 4G
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Joined: Fri Aug 30, 2019 12:17 am


Postby Savannah Mance 4G » Sun Feb 23, 2020 11:12 pm

For this problem, why do I have to multiply the - change in enthalpy of fusion by the amount of moles? I thought enthalpy was a state function why does it have to be multiplied by the amount of moles of H20?

Justin Vayakone 1C
Posts: 110
Joined: Sat Sep 07, 2019 12:19 am

Re: 4F.13

Postby Justin Vayakone 1C » Sun Feb 23, 2020 11:58 pm

The units for change in entropy is J/K. That's why we multiply by moles to cancel it. I also think you're confusing state function with intensive property. A state function doesn't necessarily mean it is intensive. Change in entropy definitely depends on how many moles of substance we have.

christabellej 1F
Posts: 109
Joined: Sat Aug 17, 2019 12:17 am

Re: 4F.13

Postby christabellej 1F » Mon Feb 24, 2020 8:01 am

The enthalpy is a state function, but it doesn't mean that it isn't dependent on amount there. A state function just means that the enthalpy value calculated from the reaction is independent of how the reaction got there.

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