Question

why should a magnesium ribbon be cleaned before burning in air

Answer 1

Hi friend, Here is the required answer:-

A magnesium ribbon should be cleaned before burning because to remove the layer of magnesium oxide so it can readily burn in air.

Hope this helps you...

Answer 2

Hey mates
there is your answer

If magnesium ribbon remains in contact with moist air ,then a white coloured layer of magnesium oxide get deposited on it . This layer prevents the burning of Magnesium. Therefore magnesium ribbon is cleaned before burning