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 Form 3 Chemistry Sample Revision Questions With Answers

The apparatus below was set up to show the catalytic oxidation of ammonia.
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a) Write the equation between water and solid B.
(b) State and explain two observations made in gas jar Y.

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Answer Text:
a).#Na_2O_(2(aq)) + H_2 O_(l) -> 2NaOH_(aq) +O_(2(g))#
b).(i) Platinum wire burns
Explanation: Reaction is exothermic
(ii) Brown fumes/gas can be seen
Explanation: Nitrogen (II) oxide formed is oxidized to nitrogen (IV) oxide


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