what physical observations would help you to differentiate complete from incomplete combustion? give at least two such observations.

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22-11-2022
Chemistry

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what physical observations would help you to differentiate complete from incomplete combustion? give at least two such observations.

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smecloudbird17 smecloudbird17 · Answer 1 · 2022-11-25T10:49:17+01:00

The physical observations which helps to differentiate between the complete and incomplete combustion is colour of flame, and the production of soot.

When combustion takes place in the presence of a sufficient amount of oxygen, then it is known as complete combustion. In this type of a combustion, the colour of the flame is blue. It does not produce any smoke and example for the complete combustion is the combustion of LPG.

When the combustion takes place in the presence of insufficient amount of oxygen, it is known as incomplete combustion. In the incomplete combustion, the yellow colour flame is observed. When incomplete combustion takes place, soot is formed. One example of incomplete combustion is the burning of wood, which causes the air pollution.

Therefore, formation of soot and colour of the flame are two observations which tells about complete and incomplete combustion.

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