Chemistry
Name an ammonium salt which is a constituent of
(a) smelling salts
(b) dry cells.
Give reasons for the use of the named ammonium salt for the same.
Answer
(a) Ammonium Carbonate, [(NH4)2CO3] is used as smelling salt. It dissociates evolving pungent ammonia gas and hence is used as a constituent for smelling salts.
(NH4)2CO3 ⟶ 2NH3 + CO2 + H2O
The pungent smelling NH3 gas revives a fainted person.
(b) Ammonium Chloride (NH4Cl) is used in dry cells. It oxidizes Zn to Zn2+ ions. The electrons so produced constitute the electric current.
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