Stoichiometric coefficient: The number of molecules of a reactant taking part in a reaction is known as Stoichiometric coefficient. For example: Consider the following equation: aA + bB ⇌ cC + dD In this equation, a, b, c and d are called as Stoichiometric coefficients of the A, B, ...

Relationship between Kp and Kc Consider the following reversible reaction: aA + bB ⇌ cC + dD The equilibrium constant for the reaction expressed in terms of the concentration (mol / litre) may be expressed as: K c = [C] c [D] d / [A] a [B] b If the ...

Norwegian Chemists Waage and Gulberg were the ones who gave us law of mass action. This law of mass action suggest a quantitative relationship between the rates of the reaction and the concentration of the reacting substances. Law of mass action states that: The rate of a ...

The state at which the concentrations of reactants and products do not change with of a chemical reaction is known as chemical equilibrium. When the reactants are mixed together in a vessel, the whole reactants do not completely converted into products. After some time the ...

Mathematically, G = H – TS At constant temperature, ∆G = ∆H - T∆S Hence two factors contribute to the value of free energy ∆G. One is energy factor ∆H and the other is entropy factor T∆S. Both the factors are necessary for calculating the spontaneity of the reaction. The ...

If the free energy change i.e. ∆G of a chemical reaction is positive, the reaction would not proceed. If the free energy change i.e. ∆G of a chemical reaction is negative, the reaction would be spontaneous i.e. feasible. If the free energy change i.e. ∆G ...

Spontaneous reaction is those which proceed at very fast rate. A chemical reaction which is accompanied by evolution of heat is known as exothermic reaction. Spontaneous reactions are also known as exothermic reactions. In the exothermic reactions internal energy change has negative sign at constant ...

1. The primary photochemical process may get backtracked due to any reason. 2. The broken molecules may combine with each other resulting in the formation of the original molecule. 3. Activated molecules lose its energy before they get react further. 4. Collision of excited molecule with non excited ...