What do you mean by Cp and Cv. Derive the relation between Cp and Cv.
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The specific heats of gases are given as Cp and Cv at constant pressure and constant volume respectively while solids and liquids are having only single value for specific heat.
When heat is absorbed by a body, temperature of the body increases. And when heat is lost, the temperature decreases. Temperature of any object is the measure of the total kinetic energy of the particles that make up that object. So when heat is absorbed by an object this heat gets translated into the kinetic energy of the particles and as a result the temperature increases. Thus, the change in temperature is proportional to the heat transferred. The formula q = n C ∆T represents the heat q required to bring about ∆T difference in temperature of one mole of any matter. The constant C here is called the molar heat capacity of the body. Thus, molar heat capacity of any substance is defined as the amount of heat energy required to change the temperature of 1 mole of that substance by 1 unit. It depends on the nature, size and composition of the system. In this article we will discuss two types of molar heat capacity – CP and CV and derive a relationship between them.
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When heat is absorbed by a body, temperature of the body increases. And when heat is lost, the temperature decreases. Temperature of any object is the measure of the total kinetic energy of the particles that make up that object. So when heat is absorbed by an object this heat gets translated into the kinetic energy of the particles and as a result the temperature increases. Thus, the change in temperature is proportional to the heat transferred. The formula q = n C ∆T represents the heat q required to bring about ∆T difference in temperature of one mole of any matter. The constant C here is called the molar heat capacity of the body. Thus, molar heat capacity of any substance is defined as the amount of heat energy required to change the temperature of 1 mole of that substance by 1 unit. It depends on the nature, size and composition of the system. In this article we will discuss two types of molar heat capacity – CP and CV and derive a relationship between them.
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