Question

An element X burn in air with a bright white light and form a white powder which is found to be basic in nature. element X ,on heating with water , liberates a colourless gas which burns with a popping sound . on the basic of above image answer the following questions:

Answer 1

Hi.

i---- The element X is Magnesium.
              (X) 2Mg +O2→2 MgO (white powder)

ii----The chemical name of white powder formed is magnesium oxide.

iii--- To the colorless phenolpthalin, add magnesium oxide, i.e., the white powder, it turns pink showing the basic nature of white powder.

iv--- The reaction is-------
              (X) Mg + 2H2O -----------------------------Mg(OH)2  +  H2

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Answer 2

Answer:

magnesium oxide

Explanation:

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