Why should a magnesium ribbon be cleaned before burning in air please answer?

Question

Answer

Magnesium is a very reactive metal which when come in contact with oxygen form magnesium oxide which prevents further reaction of magnesium with heat , and causes delay in burning of magnesium ribbon to prevent such delays magnesium ribbon must be cleaned with Sandpaper before burning in air,reaction involved can be represented as (when a magnesium ribbon is burned)-->2Mg+O2=2MgO

Answer

----))The magnesium ribbon should be cleaned before burning in the air because the layer of magnesium oxide (which is formed due to the reaction of magnesium with air ) can be removed in order to get the chemical reaction.

•Also in order to remove the oxide layer, the presence of which slowdowns the oxidation process. So, by cleaning it, the burning process takes place easily.

Answer

The magnesium ribbon should be cleaned before burning in the air because, magnesium is highly reactive metal, the layer of magnesium oxide (which is formed due to the reaction of magnesium with air ) can be removed in order to get the desired chemical reaction.

Answer

It reacts with oxygen and forms a white layer of magnesium oxide and this layer is unable to burn. And in order to remove this layer , we should clean it.

Answer

Introduction:
Before burning a magnesium ribbon in air, it is important to clean it properly. This is done to ensure a successful and efficient burning process. Cleaning the magnesium ribbon removes any impurities or contaminants that may hinder the reaction or interfere with the desired results.

Reasons for cleaning the magnesium ribbon before burning:

1. Removal of oxide layer:
- Magnesium readily reacts with oxygen in the air to form a thin layer of magnesium oxide on its surface.
- This oxide layer acts as a barrier and prevents further reaction between magnesium and oxygen.
- Cleaning the magnesium ribbon removes this oxide layer, allowing for a fresh surface to react with oxygen during the burning process.

2. Enhancing reactivity:
- The presence of impurities or contaminants on the surface of the magnesium ribbon can reduce its reactivity.
- Cleaning the ribbon helps to remove these impurities, ensuring a higher reactivity of the magnesium during combustion.
- A clean surface allows for a more efficient and complete reaction between magnesium and oxygen.

3. Safety precautions:
- Cleaning the magnesium ribbon before burning also serves as a safety precaution.
- Impurities or contaminants on the ribbon may have hazardous properties or produce unwanted byproducts during combustion.
- Removing these impurities reduces the risk of any potential hazards or adverse effects during the burning process.

Methods of cleaning magnesium ribbon:
- Sandpaper: Gently rubbing the surface of the magnesium ribbon with sandpaper can help remove the oxide layer and any surface impurities.
- Diluted acid: Treating the ribbon with a mild acid, such as dilute hydrochloric acid, can dissolve any remaining impurities or oxide layer.
- Rinse with water: After cleaning with sandpaper or acid, rinsing the ribbon with water helps to remove any residues or traces of the cleaning agents.

Conclusion:
Cleaning the magnesium ribbon before burning in air is essential to remove the oxide layer, enhance reactivity, and ensure safety. This process involves using methods like sandpaper and diluted acid to eliminate impurities and contaminants. By cleaning the ribbon, a fresh surface is exposed, allowing for a more efficient and complete reaction between magnesium and oxygen.

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