Heat capacity vs. specific heat capacity


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Shanzey
Posts: 120
Joined: Wed Sep 18, 2019 12:20 am

Heat capacity vs. specific heat capacity

Postby Shanzey » Sun Feb 02, 2020 10:39 pm

What is the difference between heat capacity and specific heat capacity? Is it a matter of whether they are intensive or extensive properties?

lilymayek_1E
Posts: 107
Joined: Sat Aug 17, 2019 12:16 am

Re: Heat capacity vs. specific heat capacity

Postby lilymayek_1E » Sun Feb 02, 2020 10:57 pm

heat capacity is, by definition, the heat required to raise the temperature of an object by 1 degree C. heat capacity by itself is an extensive property, which essentially means that heat capacity depends on the mass amount.
specific heat capacity is an intensive property, which doesn't depend on the mass amount. in this case, specific heat capacity is the heat required to raise the temperature of 1g of something by 1 degree C (which means that it doesn't depend on mass like regular heat capacity, and can be seen as a constant).
so in this case, the difference depends on the fact that they are extensive/intensive properties!

SVajragiri_1C
Posts: 115
Joined: Thu Jul 11, 2019 12:16 am

Re: Heat capacity vs. specific heat capacity

Postby SVajragiri_1C » Sun Feb 02, 2020 11:23 pm

Heat capacity is the amount of heat needed to raise a mass of a substance by one degree Celsius/Kelvin. Specific heat is a variation of heat capacity in that specific heat is the amount of heat needed to raise one unit of mass of a substance by one degree Celsius/Kelvin. Specific heat remains the same no matter the mass of the substance, but heat capacity varies based on the experiment.

Venus_Hagan 2L
Posts: 104
Joined: Fri Aug 02, 2019 12:16 am

Re: Heat capacity vs. specific heat capacity

Postby Venus_Hagan 2L » Sun Feb 02, 2020 11:26 pm

heat capacity is the most general term focusing on how much heat is required to raise a substance by 1 degree C/K. Specific heat capacity takes into account mass and is how much heat is required to raise 1 gram of the substance by 1 degree C/K.


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