Question

hiii guys.... please explain molar specific heat capacity at constant pressure....... ☹️☹️☹️☹️☹️☹️☹️​

Answer 1

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Explanation:

Molar Specific Heat of a gaseous substance is defined as the amount of heat absorbed or rejected to change the temperature of one mole of it by one unit. When we keep the pressure of the gas constant the term is called the molar specific heat capacity of a gas at constant pressure (Cp).

Answer 2

The heat capacity represents the change in temperature in the sample for a given amount of heat. The specific heat in SI Units are joule per kelvin (J Kg⁻¹). Specific heat capacity represents the amount of heat needed to raise the temperature of a unit mass of a substance by 1°C. The formula for specific heat is :

$\displaystyle{\sf{S(Heat\ Capacity)=\frac{Q}{\Delta t} }}$

$\displaystyle{\sf{s=\frac{S}{m}=\frac{1}{m}. \frac{Q}{\Delta t} }}$

Specific heat capacity is different from heat capacity only in the fact that specific heat capacity accounts for the mass of the body and hence it is more specific and accurate than heat capacity.

The SI unit of specific heat is Joule per kelvin per kg(J K⁻¹ Kg⁻¹).

Specific heat capacity is divided among into groups,

✔ Molar Specific Heat Capacity at Constant Pressure: If the heat transfer to the sample is done when it is held at a constant pressure, then the specific heat obtain using such a method is called Molar Specific Heat Capacity at Constant Pressure.

✔ Molar Specific Heat Capacity at Constant Volume: If the heat transfer to the sample is done when the volume of the sample is held constant, then the specific heat obtain using such a method is called Molar Specific Heat Capacity at Constant Volume.