Why is CP is greater than CV?

The heat capacity at constant pressure CP is greater than the heat capacity at constant volume CV , because when heat is added at constant pressure, the substance expands and work.

Why is CP greater than CV explain?

Yes, C_p is greater than C_v because when a gas is heated at constant volume, the work is done only to increase the internal energy of the system. Whereas, when the gas is heated at constant pressure work is done to overcome this pressure and expand in volume and also to increase the internal energy of the system.

Is CP greater than CV in solids?

Therefore, CP is less than CV.

Can CP ever be less than CV if so give an example?

Under constant volume, all heat goes into internal energy. In this example, water contracts upon heating, so if we add heat at constant pressure, work is done on the water by surroundings and therefore, C_P is less than C_V”.

Why do CP and CV have different values for gas systems?

In the constant pressure heat addition process, the volume of the gas increases, thus, energy given by integration pdv is also added to the gas. In the constant volume heat addition process this term integration pdv is zero. Thus, cp and cv are different and cp is greater than cv.

why Cp is greater than Cv ( Explained with Example/ Thermodynamics)

Why a gas has two principle specific heat capacities What is the significance of CP CV and CP CV where symbols have usual meaning?

Gas has two specific heat capacities because it has two variables pressure and volume sensitive. These are significant in case of gas. We can assume one of them is fixed when we supply heat. If volume of the gas is constant and heat is supplied.

Which is greater Cp or Cv derive the relationship between them?

Thermodynamics. Derive a relationship between C_p and C_v for an ideal gas. Thus C_p is greater than C_v by the gas constant R i.e. approximately 2 calories or 8.314 Joules.

What is the difference between specific heat Cp and Cv?

Cv is the amount of heat energy that a substance absorbs or releases with the change in temperature where a volume change does not occur. Cp is the amount of heat energy that a substance absorbs or releases with the change in temperature where a pressure change does not occur.

What is the relation between Cp and Cv for one mole of gas?

Relation between CP and CV :CP – CV =Rwhere R is the gas constantwhich can substitute the value PV/nT in the gas eqn. for 1 mole n becomes 1 and R becomes PV/T only. Cp_cv=r,because cp and cv are molar heat capacity at constant pressure and constant volume respectively,which are defined for only one mole.

Why is specific heat capacity different for substances?

Each substance will have a different mass, so when the amount of heat and the change in temperature are held constant, the only variable is the mass. Therefore, because mass is the only variable, so because substances have different masses, they will have different specific heats.

Does CP Cv depend on temperature?

It doesn't depend on temperature, i.e, it is independent of temperature.

Why is heat capacity of liquid water higher than Vapor?

Heat of vaporization of water

Just as it takes a lot of heat to increase the temperature of liquid water, it also takes an unusual amount of heat to vaporize a given amount of water, because hydrogen bonds must be broken in order for the molecules to fly off as gas.

Why Cp value is greater than CPK?

Cpk is more widely used than Cp, since it takes into account the mean and the standard deviation in its calculation. Please note that the difference between Cp and Cpk is an indicator of how far the average of the process is from the target specification.

What is the difference between gas constant and universal gas constant?

Universal Gas Constant vs Characteristic Gas Constant

Characteristic gas constant is calculated with STP values along with the molar mass of the real gas. Universal gas constant is independent of the gas taken. Characteristic gas constant is dependent on the gas. The value of universal gas constant is 0.082057 L/(K.

What is the relationship between heat capacity at constant volume and heat capacity at constant pressure?

Relation between molar specific heat at constant pressure and that at constant volume for an ideal gas is, Cp−Cv=R, where Cp is the molar specific heat at constant pressure, CV is the molar specific heat at constant volume and R is the Universal gas constant.

Why do gases have two specific heat capacity?

A solid or a liquid when heated does not undergo any change in the volume or pressure. But in case of a gas, both the pressure and volume change on heating. Therefore, specific heat of a gas is defined either at constant volume or at constant pressure and hence a gas has two specific heats.

Which one of the following is the correct option for right relationship between Cp and CV?

1. CP=RCV.

What is the relation between specific heat capacity and change in temperature?

Relationship between the Change in Temperature of an Object and its Specific Heat Capacity (Q = mc△T)

Why is the specific heat capacity of water higher than copper?

Water has a higher specific heat capacity because it has less of a tendency to change in temperature.

Why liquid has highest heat capacity?

Water's high heat capacity is a property caused by hydrogen bonding among water molecules. When heat is absorbed, hydrogen bonds are broken and water molecules can move freely. When the temperature of water decreases, the hydrogen bonds are formed and release a considerable amount of energy.

Why do liquids have higher heat capacities?

2. In general the heat capacities of solids and liquids are higher than those of gases. This is because of the intermolecular forces operating in solids and liquids. When we heat solids and liquids, we need to supply them with potential energy as well as kinetic energy.

Why does Cv increase with temperature?

For an ideal gas, Cpm = Cvm + R. If it is a molecular gas, increasing temperature enables vibrational degrees of freedom, so that Cvm increases.

Why do some metals have higher specific heat?

What Is Specific Heat. It is the amount of energy needed to heat up a certain amount of a substance (usually a gram) by one degree. Its units are J/(g K). The heavier elements contain fewer atoms to absorb the energy per gram of material and therefore tend to have lower specific heat capacities.

What factors affect specific heat capacity?

Experiments show that the transferred heat depends on three factors—the change in temperature, the mass of the system, and the substance and phase of the substance.