Aluminium is used in thermite welding:

(a) What is thermit?

(b) What is ignition mixture?

(c) Write the reaction for this process?

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Solution

(a) A mixture of 3 parts of ferric oxide (Fe₂O₃) and one part of aluminium powder (Al).
(b) A mixture of Potassium chlorate and magnesium powder is the ignition mixture.
(c) Fe₂O₃ + 2Al → Al₂O₃ + 2Fe + heat

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Q. In thermite welding, magnesium ribbon is used to ignite the mixture.

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Aluminium is used in thermite welding: (a) What is thermit? (b) What is ignition mixture? (c) Write the reaction for this process?

(a) A mixture of 3 parts of ferric oxide (Fe2O3) and one part of aluminium powder (Al). (b) A mixture of Potassium chlorate and magnesium powder is the ignition mixture. (c) Fe2O3 + 2Al → Al2O3 + 2Fe + heat

Aluminium is used in thermite welding:

(a) What is thermit?

(b) What is ignition mixture?

(c) Write the reaction for this process?

(a) A mixture of 3 parts of ferric oxide (Fe₂O₃) and one part of aluminium powder (Al).
(b) A mixture of Potassium chlorate and magnesium powder is the ignition mixture.
(c) Fe₂O₃ + 2Al → Al₂O₃ + 2Fe + heat