Before burning in air, the magnesium ribbon is cleaned by rubbing with a sand paper to:

Question

a. Make the ribbon surface shinier
b. Remove the layer of magnesium oxide
from the ribbon surface
c. Remove the layer of magnesium
carbonate from the ribbon surface
d. Remove the moisture from the ribbon
surface

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Priyanka QNA 3 years 2021-12-01T15:41:11+00:00 1 Answer 7 views Enlightened 0

Answer ( 1 )

  1. Priyanka QNA
    0
    2021-12-01T15:41:34+00:00
    Reply

    Answer. (C) Magnesium very reactive
    element which rapidly reacts with oxygen
    in the air to form a white layer of
    magnesium oxide and this layer will not
    burn.To remove the Magnesium oxide layer
    from the ribbon which may prevent or slow
    down the burning of magnesium
    ribbon.Unwanted impurities deposited on
    the magnesium ribbon can be removed and
    only pure magnesium can be used for the
    reaction.

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