# Give One Example in the Case Where Supplying Energy (Given Below) is Necessary for a Chemical Reaction. Catalyst - Chemistry

Short Note

Give one example in the case where supplying energy [given below] is necessary for a chemical reaction.

Catalyst

#### Solution

Catalyst:

It is a substance which alters the rate of the reaction [i.e. increases or decreases the rate] without taking part in the reaction.It itself remains chemically unchanged at the end of the reaction.

Example: Catalytic oxidation of ammonia – using catalyst platinum

$\ce{4NH3 + 5O2 ->[Pt][800°C] 4NO + 6H2O + \triangle}$

Concept: Chemical Equation
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#### APPEARS IN

Viraf J. Dalal Class 7 New Simplified Middle School Chemistry
Chapter 5 Language of Chemistry
Exercise | Q 9.5