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CBSE Class 12-science Answered

what is catalyst? Give an example of reaction to show.

Asked by tlb2bpartner | 21 Aug, 2019, 10:28: PM
Expert Answer
Catalyst:
 
Substances which alter the rate of a chemical reaction and themselves remain chemically unchanged after the reaction are known as catalysts.
 
Example:
 
In the procss of manufacturing of ammonia Fe is used as catalyst.
 
straight N subscript 2 subscript open parentheses straight g close parentheses end subscript end subscript space plus space 3 straight H subscript 2 subscript open parentheses straight g close parentheses end subscript end subscript space space space space rightwards arrow with Fe on top space space space 3 NH subscript 3 subscript open parentheses straight g close parentheses end subscript end subscript SO subscript 2 subscript open parentheses straight g close parentheses end subscript end subscript space plus space straight O subscript 2 subscript open parentheses straight g close parentheses end subscript end subscript space space rightwards arrow with straight V subscript 2 straight O subscript 5 space space space space space on top space space space space space 2 SO subscript 3 subscript open parentheses straight g close parentheses end subscript end subscript
Answered by Varsha | 22 Aug, 2019, 10:11: AM
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