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PART - 1 CH - 5 Thermodynamics — Chemistry STD 11 Science — Question

Gujarat BoardEnglish MediumSTD 11 ScienceChemistryPART - 1 CH - 5 Thermodynamics2 Marks
Question
Explain molar heat capacity and specific heat capacity.
✓

Answer

Molar heat capacity : Amount of energy required to increase the temperature of one mole of substance by $1^{\circ} C$ or 1 K is known as molar heat capacity i.e. it is heat capacity of one mole of substance.
$
C_m=\frac{C}{n}
$
where $n =$ number of moles.
Specific heat capacity (C) : Amount of energy required to increase the temperature of 1 gm of any substance by $1^{\circ} C$, is known as specific heat capacity.
Energy required to increase the temperature of substance (q)
$
\begin{array}{l}
q=c \times m \times \Delta T \\
q=C \Delta T
\end{array}
$
Here $C = cm$
$m =$ mass of substance, $\Delta T =$ change in
temperature, $c =$ specific heat

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