law of chemical equilibrium & equilibrium constant

states that only the radiation actually absorbed by the reacting system can initiate a reaction. The light which simply passes through the reaction medium does not initiate the reaction. Absorption of a photon is the first essential step in a photo chemical reactio..

First law states that the mass of a substance deposited or liberated on an electrode during electrolysis is proportional to the total quantity of electric charge passed through the electrolyte. Second law states that if same quantity of charge is passed through several elec..

According to this law, during any physical or chemical change, the total mass of the products remains equal to the total mass of the reactants. Law of conservation of mass is also known as 'Law of indestructibility of matte..

Mendeleev's Periodic Law - Later, Mendeleev arranged the sixty-three elements known at that time in the increasing order of the atomic masses, in the form of a table called the Periodic Table. The periodic table further classified the elements by arranging the elements with similar proper..

(i) The law of octaves was the first logical attempt to classify elements on the basis of atomic weights. (ii) Periodicity of elements was recognised for the first time. Remember:- In 1860, there was a conference of chemists in Karl Sruhe, Germany. During this conference, Stanislao ..

The third law helps to calculate the absolute entropies of pure substances at different temperatures. The entropy (S) of the substance at different temperature T may be calculated by the measurement of heat capacity changes. If S o be the entropy of the substance at 0 Kand S be its entr..

Another French chemist, Joseph Proust, stated this law as 'A chemical compound always contains same elements combined together in the same proportion by mass'. For example, pure water obtained from different sources such as river, well, spring, sea, etc., always contains hydrog..

Stated by French chemist Joseph Proust A chemical compound always contains same elements combined together in the same proportion by mass. For example, pure water obtained from different sources such as river, well, springs, sea, etc., always contains hydrogen and oxygen together in the ..

>where e is a constant for the given surface having a value between 0 and 1. This constant is called the emissivity of the surface. It is zero for a completely reflecting surface and is unity for a black body. Using Kirchhoff's law, where a is the absorptive power of the body. The emissiv..

Law of Conservation of Energy - Let us see what is actually taking place in the following examples: Steam engine- Here the coal burns and the heat due to the combustion of coal converts water into steam and the expansive force exerted by the steam on the piston of the engine moves the loc..