Combination reaction - Vidyadip

Question

Combination reaction

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Answer

When two or more reactants combine in a reaction to form a single product, it is called a combination reaction.
Examples:
1. The ammonia gas reacts with hydrogen chloride gas to form the salt in gaseous state, immediately it condenses at room temperature and gets transformed into the solid state.
$NH _{3( g )}+ HCl _{( g )} \longrightarrow NH _4 Cl _{( s )}$
2. Magnesium burns in air to form white powder of magnesium oxide as a single product.
$
2 Mg + O _2 \stackrel{\text { heat }}{\longrightarrow} 2 MgO
$
3. Iron reacts with sulphur to form iron sulphide.
$
Fe _{( s )}+ S _{( s )} \stackrel{\text { heat }}{\longrightarrow} FeS _{( s )}
$

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