QUESTIONS (TEXTBOOK PAGE NO. 6)
Why should a magnesium ribbon be cleaned before burning in air?
ns. A
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Answered by
2
Answer:
hy...
Explanation:
Magnesium ribbon must be cleaned before burning in air so that the layer of magnesium oxide (which is formed due to reaction of magnesium with air) can be removed in order to get the desired chemical reaction.
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Answered by
1
Answer :
Magnesium is a highly reactive metal. When exposed to air for a long time it gets coated with the layer of oxide which is physically and mentally stable and therefore, partly masks the reactivity of magnesium. The oxide coating does not burn when a flame is brought in contact with the metal. Therefore, the surface should be cleaned, with a sandpaper before burning the magnesium ribbon in air.
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