Which of the following process does not occur at the interface of phases?
Homogeneous catalysis
Explanation of the correct option.
Homogeneous catalysis is a reaction in which the catalyst phase, the reactant phase and the product phase are all the same. So, this does not occur at the interface of phases. So, option (C) is correct.
Explanation of incorrect options.
A. Crystallization refers to the process by which a solid is formed in which the atoms or molecules are highly ordered or organized in a structure called crystal.
B. Heterogeneous catalysis is a catalytic reaction in which the catalyst phase differs from the reactant or the product phase.
D. Corrosion is a natural process by which refined metals are converted into chemically stable forms like oxides, sulphides etc. Thus, chemical reactions occur at the interface between the metal and its environment.