Question

why should magnesium ribbon be cleaned when it is burned in air..?​

Answer 1

Magnesium ribbon should be cleaned with sandpaper before burning in the air.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.

Hope it's useful

Answer 2

Answer:

$\huge \pink {Q} \red {u} \green {e} \blue {s} \orange {t} \pink {i} \red {o} \blue {n}$

why should magnesium ribbon be cleaned when it is burned in air..?

_________________________

$\huge\underline\mathtt\red{Answer:}$

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.

____________________________

Explanation:

Thanku:)