Thermodynamics what is cp

Water has the highest specific heat capacity of any liquid. The symbol for specific heat is cp, with the p subscript referring to the fact that specific heats are measured at constant pressure. How do I calculate specific heat? You can use this formula to calculate the specific heat. In the case of gases, just replace the mass by moles of the gas. The symbol c stands for specific heat and depends on the material and phase. In words: Work is equal to the force that is exerted times the distance over which it is exerted.

What is the formula for specific heat? The heat capacity of a substance is the amount of heat required to raise the temperature of a defined amount of pure substances by one degree Celsius or Kelvin. The calorie was defined so that the heat capacity of water was equal to one. This radiant solar energy warms the atmosphere and becomes heat energy.

The final temperature of 10 gram of water which absorbed joules of energy at an initial temperature of 25 degrees and final temperature of 45 degrees. Using the symbol H for the enthalpy:. The enthalpy can be made into an intensive , or specific , variable by dividing by the mass. Propulsion engineers use the specific enthalpy in engine analysis more than the enthalpy itself. How does one use this new variable called enthalpy?

Let's consider the first law of thermodynamics for a gas. What is Heat Capacity? As the body absorbs heat the temperature of the body rises, but when heat is withdrawn from the body it cools down, so the body heat decreases. Heat capacity is the ratio of heat absorbed by a material to the temperature change. Therefore, the temperature change in a body is directly proportional to the heat transferred to the given body.

Definition of molar heat capacity, C: The total amount of energy in form of heat needed to increase the temperature of 1 mole of any substance by 1 unit is called molar heat capacity C of that substance. It also depends greatly on the nature, size and composition of a substance in a system. This Formula Represents:. Cp: In a system, Cp is the amount of heat energy released or absorbed by a unit mass of the substance with the change in temperature at a constant pressure. In another words, under a constant pressure it is the heat energy transfer between a system and its surrounding.

So, Cp represents the molar heat capacity, C when pressure is constant. CV: CV is related to the internal energy of a system. CP: CP is related to the enthalpy of a system. Specific heats are thermodynamic properties of substances. These properties explain the behavior of a substance or a system with the changes of temperature of that system. The concept of specific heat is true for ideal gases, but it often has to be modified when using with normal gases.

This is because the behavior of gases typically depends on both temperature and the pressure. Available here. Wikimedia Foundation, 13 July Her interest areas for writing and research include Biochemistry and Environmental Chemistry.