Difference between photochemical reactions and thermochemical reactions are discussed below: THERMOCHEMICAL REACTIONS PHOTOCHEMICAL REACTIONS These reactions involve absorption or evolution of heat. These reactions involve absorption of light. They can…
Integrated Rate Expression of Zero Order Reaction: Consider the general reaction: A —————-> products If it is a reaction of zero order then, Rate = -d / dt = k…
Half Life Period is defined as the time taken for half of the reaction to be completed i.e. the time in which the concentration of a reactant is reduced to…
Consider the two different initial concentrations and finding their half lives, the order of reaction (n) can be calculated as follows: Taking log on both sides we will get: log…
Amount of the substance left after one half life = A0 / 2 Amount of the substance left after two half lives = A0 / 22 Amount of the substance…
Experimental methods for determination of rate constant are discussed below: 1. Concentration change method: In this method the concentration of one of the reactants or products is measured at different…
1) For the first order reaction: k = (2.303 / t) log (a / a – x) When x = (40 / 100) a = 0.4 a t = 50…
Pseudo unimolecular reactions: Consider the following acid catalysed reactions: 1. Hydrolysis of ethyl acetate: CH3COOC2H5 + H2O + H+ ———–>CH3COOH + C2H5OH 2. Inversion of cane sugar: C12H22O11 + H2O…
Collision theory: According to collision theory, a reaction takes place because the molecules collide with each other. The number of collisions that take place per second per unit volume of…
Relationship between the rate of reaction and collision frequency: If Z is the collision frequency and f is the fraction of molecules whose collisions are effective, then evidently: Rate of…
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