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Air was passed through several reagents shown in the flow chart below.
Air passing through several reagents

  1. Write an equation for the reaction which takes place in the chamber with magnesium powder. 
  2. Name another solution that can be used in place of conc. KOH solution. 
  3. Name one gas, which escapes from the chamber containing magnesium powder. Give a reason for your answer. 

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  1. 3Mg(s) + N2(g) → Mg3N2(s)
  2. Sodium hydroxide.
  3. Argon/Neon/ Xenon /Krypton
    It’s stable hence does not react under normal conditions/ The gas is inert.
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