Tamilnadu BoardEnglish MediumSTD 12ChemistrySurface Chemistry2 Marks
Question
What is meant by catalyst poison?
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Answer
1. The substances when added to a catalysed reaction decreases or completely destroys the activity of a catalyst are often known as catalytic poisons.2. In the reaction $2 SO _2+ O _2 \rightarrow 2 SO _3$ with Pt catalyst, the catalyst poison is $AS _2 O _3$.
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