Today photochemistry has become one of the most powerful research tool. Compounds of different molecules are occurred through various photochemical reactions like CO<sub>2</sub>, NH<sub>3</sub> and methane. Other examples of photochemical…
According to the principle of photochemical activation, only that part of the light which is absorbed by any system can cause photochemical change or reaction. However this is not essential…
According to Lambert-Beer law, when a beam of monochromatic radiation passes through any solution, the intensity of the beam reduces to some amount. Let if I0 is the intensity of…
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.…
The chemical reactions which take place with energy changes are known as thermochemistry. A thermochemistry deal with energy changes and it is a branch of chemistry. The energy changes occur…
Change of internal energy in a chemical reaction: The energy associated with the random, disordered motion of molecules is called Internal energy. Internal energy is a state property i.e. its…
The quantity U + PV is known as the enthalpy of the system. It is denoted by H. It represents the total energy stored in the system. Thus H =…
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…
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…
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…
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