Short Answer TypeThe chemistry of corrosion of iron is essentially an electrochemical phenomenon. Explain the reactions occurring during the corrosion of iron in the atmosphere.
Determine the values of equilibrium constant (KC) and  
G° for the following reaction: 
The rate expression can be defined as the stoichiometric coefficients of reactants and products. An expression in which the rate of reaction is given in terms of the molar concentration of the reactants, with each term raised to some power, which may or may not is the stoichiometric coefficient of the reacting species in a balanced chemical equation.Â
The rate constant can be defined as the rate of the reaction when the concentration of each of the reactant is taken as unity.Â
 Example: 2NO(g)+O2(g)--- 2NO2(g)
The rate expression for the above reaction can be written as follows:
 Rate = k [NO]2 [O2] (Experimentally determined)
Now, if the concentration of NO and O2 is taken to be unity, then the rate constant is found to be equal to the rate of the reaction.
State reasons for each of the following:Â
The N-O bond in  is shorter than the N-O bond inÂ
State reasons for each of the following:Â
(i) All the P-Cl bonds in PCl5 molecule are not equivalent.Â
(ii)Â Sulphur has a greater tendency for catenation than oxygen.
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