Liquid hydrocarbon can be converted into mixture of gas hydrocarbon by a) hydrolysis b) oxidation c) cracking d) distillation?

Question

Answer

The process of breaking higher hydrocarbons with high boiling points into a variety of lower hydrocarbons that are more volatile (low boiling), is called cracking (or pyrolysis). For example, a higher hydrocarbon

splits according to the reaction.

The process of cracking or pyrolysis increases the relative amounts of the lower hydrocarbons, which exists in a gaseous state, while higher hydrocarbons exist in the liquid or solid state

Answer

C) cracking
Higher hydrocarbons are found in liquid or solid state whereas lower hydrocarbons exist in gaseous state.
When we crack higher hydrocarbons we get lower hydrocarbons with lower molecular mass.
That is we get a mixture of lower hydrocarbons.
In this case if we crack liquid hydrocarbon which is a higher hydrocarbon we will get a mixture of gaseous hydrocarbon.

The correct answer is therefore Cracking.

Answer

Oxydation

Answer

Oxidation

Answer

Liquid hydrocarbon can be converted into a mixture of gas hydrocarbon through the process of cracking. Cracking is a chemical process in which larger hydrocarbon molecules are broken down into smaller ones. This is achieved by subjecting the liquid hydrocarbon to high temperatures and/or catalysts.

Cracking of liquid hydrocarbon can be further explained under the following headings:

1. Cracking Process:
Cracking can be done through various methods, including thermal cracking, catalytic cracking, and hydrocracking. In thermal cracking, the liquid hydrocarbon is heated to high temperatures, typically between 500 to 700 degrees Celsius, in the absence of catalysts. This breaks the carbon-carbon bonds in the hydrocarbon molecules, resulting in the formation of smaller hydrocarbon fragments.

2. Thermal Cracking:
Thermal cracking can be further divided into two types: pyrolytic cracking and steam cracking. Pyrolytic cracking involves the breaking of hydrocarbon molecules into smaller fragments by applying heat. Steam cracking, on the other hand, involves the use of steam along with heat to break down the molecules. Both methods result in the formation of gas hydrocarbons.

3. Catalytic Cracking:
Catalytic cracking involves the use of catalysts to facilitate the cracking process at lower temperatures. The catalysts used can be solid acids or zeolites, which help in breaking the carbon-carbon bonds. This method is more efficient and allows for better control over the cracking reactions.

4. Products of Cracking:
The cracking of liquid hydrocarbons produces a mixture of gas hydrocarbons, such as ethane, propane, butane, and various other gases. These gases are valuable as they can be used as fuels or as feedstocks for the production of other chemicals.

5. Importance of Cracking:
Cracking is an important process in the petroleum industry as it allows for the production of valuable products from heavier, less desirable fractions of crude oil. By converting liquid hydrocarbons into gas hydrocarbons, cracking enables the production of lighter and more valuable products, such as gasoline, diesel, and other petrochemicals.

In conclusion, the conversion of liquid hydrocarbon into a mixture of gas hydrocarbon is achieved through the process of cracking. This process involves subjecting the liquid hydrocarbon to high temperatures and/or catalysts, resulting in the breakdown of larger hydrocarbon molecules into smaller ones. The products of cracking are valuable gases that can be used as fuels or as feedstocks in various industries.

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