Chapter : 6. Carbon and Its Compound
Chemical Properties of Carbon Compounds
Chemical Properties of Carbon Compounds 64. Combustion of Carbon: Carbon, in all allotropic forms, burns in presence of oxygen to form carbon dioxide with evolution of heat and light energy. In case of diamond, graphite and fullerene, they burn completely to form CO
2 because they are purest form of carbon.
C + O
2 → CO
2 + Heat + light
Most of the carbon compounds are combustible and burn in presence of oxygen to form CO
2 and H
2O. e.g.,
CH
4(g) + 2O
2(g) → CO
2(g) + 2H
2O(
l) + heat + light
2H
2H
6(g) + 7O
2(g) → 4CO
2(g) + 6H
2O(
l) + Heat + light
2CH
3OH(g) + 3O
2(g) → 2CO
2(g) + 4H
2O(
l) + heat light
CH
3CH
2OH(
l) + 3O
2 → 2CO
2(g) + 3H
2O(
l) + heat
CH
3COOH (
l) + 2O
2(g) → 2CO
2(g) + 2H
2O(
l) + heat
65. Combustion of Hydrocarbons : If hydrocarbons are burnt in limited supply of oxygen then smoky flame is produced due to incomplete combustion whereas in excess of oxygen, complete combustion takes place and non-luminous bluish flame with high temperature is produced.
66. Oxidising Agent : Those substances which can add oxygen to starting material are called oxidising agents, e.g., alkaline KMnO
4 and acidified potassium dichromate
75. Combustion of Acetylene : Acetylene burns in presence of oxygen to form CO
2 and H
2O.
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