HOW CAN WE SAY THAT SUBLIMATION OF AMMONIUM CHLORIDE IS BOTH CHEMICAL AND PHYSICAL CHANGE
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Some substances can undergo physical and chemical change:
Sublimation of NH4Cl ⇔ NH3 +HCl
when ammonium chloride is heated , it vaporizes to form gaseous ammonium chloride. This is a physical change . Ammonium chloride i partially dissociated . This is a chemical change.
The products ammonia and HCl combine to fork NH4Cl . This also a chemical change.
Similar example is seen in
Aneesh77:
thanks
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