|
Unlimited Tutoring & Homework Help
|
Energy Barrier
Energy Barrier - In this theory, the rate constant is related to three factors Z, f and p by the equation k = Zfp b (19) where Z is the collision frequency f is the fraction of collisions having energy greater than the threshold energy and p is the fraction o..
Energy Barrier
In this theory, the rate constant is related to three factors Z, f and p by the equation k = Zfp..
Energy and Orientation Barriers to Reactions
From Arrhenius equation, it is seen that the rate constant k of a reaction increases with temperature and therefore, the rate of reaction also increases. Why does k depend on temperature? This can be explained, to a certain extent, by collision theor..
Orientation Barrier
. Collision theory explains the temperature dependence of rate of a reaction based specifically on the concept of effective collisions. However, collision theory does not account for the role of activation energy influencing the rate of a reaction. Another theory that was proposed a few y..
Concept of Activation Energy
For a reaction to occur, reactant molecules must collide with each other. Only those collisions result in product formation which have energy equal or more than a certain minimum energy. This energy is called the threshold energy. This implies that ther..
Work, Energy and Power Definitions
Introduction - Newton's laws of motion help us to analyse many kinds of motion. But the analysis is complicated, requiring details about the motion that we simply do not kno..
Concept of Activation Energy
For a reaction to occur, reactant molecules must collide with each other. Only those collisions result in product formation which have energy equal or more than a certain minimum energy. This energy is called the threshold energy. This implies that there is a..
Collision Theory
From Arrhenius equation, it is seen that the rate constant k of a reaction increases with temperature and therefore, the rate of reaction also increases. Why does k depend on temperature? This can be explained, to a certain extent, by collision theory. According to this theory, a chemical reaction..
Photochemical Reactions
Photochemical Reactions - There are many reactions that are affected by electromagnetic radiations. Chemical reactions, which occur in the presence of visible and ultraviolet light are called photochemical reactions. Photochemical reactions occur only when photons of radiant energy (h n )..
Summary
The biotic and abiotic components form an interacting system called 'ecosystem'. Producers, consumers and decomposers are the various trophic levels, which are linked by their food relationship forming a 'food chain'. Several food chains are interrelated and interconnected to form a network called ..
See what our Users say :
My son likes this website very much, the tutors are well trained to manage lower grade level kids ,It's a Great Website..
I am Jessica from New York, I got excellent English tutors from Tutor Vista, who helped me lot to overcome my grammar mistakes, Thanks a lot...
24/7 tutoring is a great opportunity for students like me, who are working. Thank you very much!
I have a personalized assistance with an expert math tutor at my home itself, It's wonderful - Shijo

