Question

A shiny brown metal X is reacted with oxygen to form a black colour compound Y. Identify X and Y. Also identify correct name of reaction.
a) X- copper , Y- copper oxide. Combination reaction
b) X- Copper, Y- Copper oxide, Displacement reaction.
c) X- Zinc Y- Zinc oxide, combination reaction.
d) X- Mg , Y- MgO, displacement reaction.​

Answer 1

Answer:

The brown coloured metal is copper. Hence ′X′ is copper and the black coloured compound formed is Copper oxide. The reaction involved is: 2Cu(s)+O2(g)→CuO(s)

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