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Heat Capacity

Posted: Sat Jan 25, 2020 5:58 pm
by Vanessa Rojas 4F
What is the difference between Specific heat capacity and molar heat capacity?

Re: Heat Capacity

Posted: Sat Jan 25, 2020 7:02 pm
by Kayla Maldonado 1C
Molar heat capacity is the amount of heat needed to raise the temperature of one mole of a pure substance by one degree Kelvin. Specific heat capacity is the amount of heat necessary to raise the temperature of one gram of a pure substance by one degree Kelvin.

Re: Heat Capacity

Posted: Sat Jan 25, 2020 8:23 pm
by KNguyen_1I
Molar heat capacity I think is the heat needed to raise the temperature of one mole of a substance, while specific heat capacity is more of an intrinsic value to identities of substances- like, specific heat capacity is unique to the identity of the substance. So no matter how much you have of it, you need that temperature.

Re: Heat Capacity

Posted: Sat Jan 25, 2020 9:28 pm
by Abigail_Hagen2G
So, can you convert between specific and molar heat capacity?

Re: Heat Capacity

Posted: Sat Jan 25, 2020 10:20 pm
by DLee_1L
YEs! Specific heat is J/(kg*K) and molar specific heat is J/(kg*m) so you would need to get the molar mass of the substance and do some dimensional analysis.

Re: Heat Capacity

Posted: Sat Jan 25, 2020 10:27 pm
by Noe BM 1J
Does this mean that Specific heat capacity will always be less than molar heat capacity since it's 1 gram vs. 1 mole?

Kayla Maldonado 1A wrote:Molar heat capacity is the amount of heat needed to raise the temperature of one mole of a pure substance by one degree Kelvin. Specific heat capacity is the amount of heat necessary to raise the temperature of one gram of a pure substance by one degree Kelvin.