Tamilnadu BoardEnglish MediumSTD 12ChemistrySurface Chemistry3 Marks
Question
What is catalysis? Explain with two examples.
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Answer
Catalysis is a process in which a chemical reaction takes place in a faster rate with the help of catalyst. Haber's process: $N _2+3 H _2 \rightarrow 2 NH _3$ In this process. Fe is the catalyst and Mo is the promoter. The surface of Fe catalyses the reaction. Vanaspathi preparation: Vegetable oil $+ H _2 \underset{\text { Ni catalyst }}{\stackrel{473 K }{\longrightarrow} \text { }}$ Nickel surface catalyses the reaction.
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