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Give the physical and chemical Properties of alkanes

Answers

1. Physical
-Alkanes are colourless gases, solids and liquids that are not poisonous.
-They are slightly soluble in water.
-The solubility decrease as the carbon chain and thus the molar mass increase
-The melting and boiling point increase as the carbon chain increase. This is because of the increase in van-der-waals /intermolecular forces as the carbon chain increase.

2. Chemical
-Alkanes burn with a blue/non-luminous non-sooty/non-smoky flame in excess air to form carbon(IV) oxide and water.
Alkane + Air -> carbon(IV) oxide + water (excess air/oxygen)
-Alkanes burn with a blue/non-luminous no-sooty/non-smoky flame in limited air to form carbon(II) oxide and water.
Alkane + Air -> carbon(II) oxide + water (limited air)

Wilfykil answered the question on February 18, 2019 at 06:26

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