What is a catalyst? A catalyst is a substance that increases a reaction rate of a reaction without being consumed on its own. In other words, it's a substance that increases the rate of a chemical reaction without being changed in identity. What is catalysis and its types? A catalyst is a chemical substance that accelerates a chemical reaction. The phenomenon which involves the action of a catalyst is called catalysis. Based on this concept catalysis are divided into two main types: (i) Homogeneous catalysis and (ii) Heterogeneous catalysis.
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