Solved Examples of Chemical Properties of Carbon Compound

Question 1: Explain the reason why carbon compounds are used as fuels.

Answer:

Carbon and its compounds are utilized as fuels because they release a lot of heat energy when they burn in the air.

Question 2: What causes the bottoms of our cooking utensils to become blackened in our homes?

Answer:

If the gas stove’s air openings become clogged and the fuel does not burn entirely, a sooty flame is produced, which blackens the bottoms of our kitchen utensils.

Question 3: Mention some drawbacks of incomplete combustion.

Answer:

Some drawbacks of incomplete combustion are.

• Unburned carbon in the form of soot pollutes the atmosphere, blackens cooking utensils, and clogs factory chimneys due to incomplete combustion.
• Incomplete combustion also results in the production of carbon monoxide, a highly toxic gas.
• The heat produced by incomplete combustion of a fuel is less than that produced by complete combustion.

Question 4: Why aren’t acetylene and oxygen mixed together for welding?

Answer:

Since incomplete combustion of acetylene and oxygen generates a sooty flame that is not hot enough to melt metals for welding, the mixture of acetylene and oxygen is not used for welding.

Question 5: Why does ethene but not ethane decolourize bromine water?

Answer:

When bromine water is added to an unsaturated compound, bromine is added, and the red-brown color of bromine water is discharged, leaving the unsaturated molecule colorless. Ethene decolorizes bromine water because it is an unsaturated hydrocarbon. However, since ethane is a saturated hydrocarbon, it has no effect on the color of bromine water.

Hydrocarbons are the most abundant carbon compounds such as alkanes, alkenes, and alkynes. We’ll now discuss some of the chemical properties of hydrocarbons, which are carbon compounds. Combustion reactions, substitution reactions, and addition reactions are the chemical properties that will be discussed here. All types of hydrocarbons (saturated and unsaturated) can be used in combustion reactions, but only saturated hydrocarbons (or alkanes) can be used in substitution reactions, and only unsaturated hydrocarbons can be used in addition reactions (alkenes and alkynes). These reactions are discussed further below.