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 Form 3 Nitrogen and Its Compounds Questions and Answers

Dry ammonia gas was passed over heated lead (II) oxide and the products passed over anhydrous copper (II) sulphate as shown in the diagram below
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(i) State two observations made in the combustion tube
(ii) The property of ammonia gas in this experiment

 (1m 2s)
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Answer Text:
(i)- Lead (II) oxide turned from brown to grey
- Anhydrous copper (II) oxide sulphate turned from white to blue.
(ii) - Ammonia is a reducing agent since it reduces Lead (II) oxide to Lead metal.


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