Internal Energy Whenever some process occur ,it is usually accompanied by some energy change. The energy may appear in different forms such as heat, light, work. The evolution or absorption of energy in different processes shows that every substance must be associated with some definite amount of energy ,the actual value of which depends upon the nature of the substance … [Read more...] about Internal Energy
Chemistry
Basic Terms And Concepts In Thermodynamics
The branch of science which deals with the study of different forms of energy and the quantitative relationship between them is known as Thermodynamics. Importance of thermodynamics 1)It helps us to predict whether any given chemical reaction can occur under the given set of conditions. 2)It helps in predicting the extent of reaction before the equilibrium has … [Read more...] about Basic Terms And Concepts In Thermodynamics
Real Gases
A gas which obeys the ideal gas equation, PV = nRT under all conditions of temperature and pressure is called an ideal gas. There is no gas which obeys the ideal gas equation under all conditions of temperature and pressure. The gases are found to obey the gas laws if the pressure is low or the temperature is high. Such gases are known as real gases. It is found that … [Read more...] about Real Gases
Viscosity
Some liquids like water, ether flow rapidly why some other liquids like glycerine, castor oil flow quite slowly. This internal resistance to flow possessed by a liquid is called its viscosity The liquids which flow slowly, have high internal resistance which is due to strong intermolecular forces and therefore, are said to be more viscous or are said to have high … [Read more...] about Viscosity
Surface Tension
Surface tension is a property of liquid which arises due to the fact that the molecules of the liquid at the surface are in different situation than those in the interior of the liquid. A molecule lying inside the liquid is surrounded by other molecules and so is attracted equally in all directions. Hence ,the net force of attraction acting on the molecule is zero. A … [Read more...] about Surface Tension