Calculate the energy released nuclear reaction
admin 92U238 ——> 90Th234 + 2He4 + Q The exact mass of 92U238 isotope = 238.1249 a.m.u. and that of 90Th234 = 234.1165 a.m.u. The exact mass of 2He4 = 4.0039…
chemistry
What is Photochemistry?
Photochemistry is the branch of science which deals with chemical reactions, reactions which occurred by the absorption of light waves which are called photons of energy. Only the radiations which…
What is the importance of Photochemistry?
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…
What are the consequences of Light Absorption?
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…
Explain Lambert-Beer Law?
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…
What are the reasons of Low Quantum Yield?
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.…
What do you mean by thermochemistry?
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…
Explain the change of internal energy in a chemical reaction and prove that internal energy is a definite quantity
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…
What will be the change of enthalpy in a chemical reaction at constant pressure?
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 =…
Define spontaneous reaction with example
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…