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Air was passed through reagents as shown below.
sukchempp1q26

  1. State and explain the observations made when air is passed over hot copper.
  2. Write the equation for the reaction taking place in chamber B 

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  • The brown copper metal turns to black copper (II) oxide .  Copper is oxidized by oxygen to form copper (II)oxide 
  • 3Mg (s) + N2(g) → Mg3N2 (s)
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