Question

Before burning in air the magnesium ribbon is cleaned by rubbing with sandpaper do

Answer 1

Answer:

ya we should clean the magnesium ribbon with sand paper b

Explanation:

before it forms magnedium oxide

Answer 2

$\huge{ \underline{ \sf{ \purple{Why \: so? \: ...}}}}$

⸙ The Magnesium is very reactive metal, hence it reacts with the oxygen in the atmosphere. Then, it reacts to form metallic oxide i.e. Magnesium oxide. The Magnesium is a shiny metal but due to this reaction and formation of oxide leads to the dull appearance of magnesium.

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Magnesium comes in strip which is also known as Magnesium strips which are generally available in labortaories like in the school laboratories. Before the experiment of burning Magnesium strip, the strip are cleaned by rubbing with sand paper. This is to remove the layer of Magnesium oxide above it. After thay, it is suitable for conducting any chemical reaction.

$\huge{ \underline{ \red{ \sf{The \: Reaction....}}}}$

$\large{\star{ \boxed{ \sf{2Mg + O2 \: \: \: \purple{ \underrightarrow { \triangle}} \: \: \: 2MgO}}}}$

⸙ Their is a very experiment of burning of magnesium ribbon in which the strip of Magnesium ribbon is burnt which produces a white dazzling light and white coloured ash which is the product i.e. Magnesium oxide (the product).

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