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प्रश्न
Ammonium chloride is also a sublimable solid. Give a reason why the sublimation of ammonium chloride involves a physical and a chemical change.
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उत्तर
Sublimation of ammonium chloride – [NH4C1]
Ammonium chloride sublimes on heating and dissociates into ammonia [NH3] and hydrogen chloride [HC1], which recombine on cooling to give back – NH4C1
\[\ce{NH4Cl [s] ⇌ NH3 [g] + HCl [g]}\]
Dissociation is a chemical change.
Hence, the sublimation of such substances involves both – a physical and a chemical change.
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संबंधित प्रश्न
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Reason: The products formed of burning a piece of wood can be easily converted back to wood log.
______ is the Universal Solvent.
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