Heat Capacity and Specific Heat

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Mya Majewski 1L
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Heat Capacity and Specific Heat

Postby Mya Majewski 1L » Fri Jan 08, 2016 10:31 pm

I know we went over these two topics in lecture today, but how exactly do these to correlate with enthalpy? In other words, what does specific heat and heat capacity tell us?

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Re: Heat Capacity and Specific Heat

Postby Chem_Mod » Fri Jan 08, 2016 10:46 pm

Heat capacity is the energy needed to increase the temperature of an object by 1 Kelvin (extensive property)
Specific heat capacity is the energy needed to increase the temperature of one gram of a substance by 1 Kelvin (intensive property)

Under constant pressure conditions, the heat transferred is equal to the enthalpy change. When dealing with liquids and solids, it doesn't really matter whether we are at constant pressure or volume due to the incompressibility, and so the heat transferred will be automatically equated to the enthalpy change.


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