Explain how the collision frequency Z and fraction f of molecules varies with temperature?
admin The rate of reaction having collision frequency Z and fraction f of molecules will be: Rate of reaction = – dx / dt = Z x f The collision frequency…
Discuss the Kinetic Stability of Fuels.
The combustion of fuels like coal in the presence of air or oxygen is thermodynamically feasible (C + O2 ———–> CO2) because ∆G is negative, yet the fuels are quite…
The rate constant of a reaction is 1.2 x 10-3 sec-1 at 300 C and 2.1 x 10-3 sec-1 at 400 C. calculate the energy of activation of the reaction.
We are given that: k1 = 1.2 x 10-3 sec-1 T1 = 30 + 273 = 303 K k2 = 2.1 x 10-3 sec-1 T2 = 40 + 273 =…
The rate of a particular reaction doubles when temperature changes from 270 C to 370 C. Calculate the energy of activation of the reaction.
We are given that: When T1 = 27 + 273 = 300 K Let k1 = k When T2 = 37 + 273 = 310 K k2 = 2 k…
Define Photochemical Reactions with example.
Some reactions do not take place in the dark but take place only in the presence of light or some other radiation. Such reactions are known as ‘photochemical reactions’. For…
What do you mean by Luminiscence? What are its types?
Luminiscence: The emission of light during a process other than by the action of heat i.e. emission of cold light is called Luminiscence. This can be of following different types:…
What is role of photochemistry in everyday life? Discuss the damaging effects of photochemistry.
Photochemistry plays an important role in everyday life. Some of the examples are given below: 1. In vision 2. In photosynthesis 3. In the manufacture of many inorganic compounds. For…
What do you mean by Chemical Bonding?
A chemical bonding is an attraction between atoms or molecules and allows the formation of chemical compounds, which contain two or more atoms. It is caused due to redistribution of…
What is Ionic Bond?
In this type of bond, the outer atomic shell of one atom has a vacancy which allows addition of one or more electrons. These newly added electrons potentially occupy a…
What are theactors influencing the Formation of Ionic Bond?
The factors which influence the formation of an ionic bond between a metal and non-metal are discussed below: 1. Ionization Energy: The amount of energy required to remove (to infinity)…