MOLAR SPECIFIC HEAT
“Amount of heat energy required to raise the temperature of one mole of
a substance by one kelvin is called ‘Molar specific heat’”.
|It is denoted by “Cn“|
D Q = n Cn DT
Where n = number of moles of substance
Cn = DQ /n DT
Unit Of Molar Specific Heat
J/mole K OR J mole-1 K-1.
MOLAR SPECIFIC HEAT OF GASES
|Gases have two types of Molar specific heat because it depends whether the gas is allowed to expand or not when heated .|
MOLAR SPECIFIC HEAT AT CONSTANT VOLUME
“Amount of heat energy required to raise the temperature to one mole of a gas
by one kelvin at constant volume is called molar specific heat at constant volume”.
|It is denoted by Cv.|
D Qv = n Cv D T
Cv = D Qv /n D T
J/ mole K or J/ mole-1 K-1
|At constant volume all the heat supplied is fully utilized in increasing the temperature of the gas.|
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