Question

b. Why does reaction (1) have to be carried out in the fume hood?

Answer 1

(b) As we know that, if we do chemical reactions, then there will be formation of our desired product. Beyond desired product, there will be many unwanted product and very much harmful gas formation takes place. Harmful gases like phosphine gas, nitrogen fumes gases, nitrogen dioxide gas, chlorine gas, cyanide gas, azide gas, arsine containing gases, sulfur containing gases and fumes, carbon monoxide and carbon dioxide etc. formation take place

To avoid the inhaling of the above toxic gases, we must use the fume hood during the chemical reactions. Fume hood sucks all these toxic gases, so you can easily complete your reactions.