MP5 Organic Chemistry - what you need to revise
Topic Sub-topic Information
Crude oil and Fossil fuels What are fossil fuels?
fractional Fossil fuels is a general term for non-renewable energy resources;
distillation some examples are natural gas (heating or electricity generation),
oil, coal (electricity), petroleum products (transportation, or
plastic/chemical production). They are formed from decomposed
remains of plants and animals. These are formed when the remains
of plants/animals are buried below layers of sediment and overtime
the heat and pressure from the ground transforms these remains
into coal, oil, natural gas depending on the conditions.
Why are fossil fuels bad?
They create air pollution that harms our health and generates toxic
gas emissions. Some pollutants they produce are sulphur dioxide,
carbon dioxide, carbon monoxide.
How are fossil fuels collected?
Many extraction methods such as surface mining, underground
mining, horizontal drilling, and hydraulic fracturing are examples of
methods which can collect fossil fuels.
What is the chemical structure of fossil fuels?
The chemical structure of fossil fuels primarily consists of
hydrocarbons. Hydrocarbons are organic compounds which are
made from only hydrogen and carbon atoms. The hydrocarbons
come in different structures:
Alkanes - C and H bonding with only single bonds
Alkenes - C and H bonding with double bonds
Alkynes - C and H bonding with triple bonds
Aromatic hydrocarbons - Alternating single and double bonds and
connected in a ring like structure.
If a hydrocarbon is saturated it contains only single bonds but if it is
unsaturated it contains one or more double or triple bonds.
Saturated carbons are more strong and stable because of their
single bond while the unsaturated hydrocarbons are more reactive
because of their double/triple bonds.
Why are hydrocarbons important in fossil fuels?
Because hydrocarbons are the main component of fossil fuels and
when they are burned they release energy which makes them a
valuable fuel source. They release heat when burned because when
the hydrocarbon bonds are broken new bonds are formed in water
and carbon dioxide and this releases large amounts of energy which
is captured as heat.
Further information What is crude oil?
on crude oil Crude oil is the name of unprocessed oil. Crude oil is a mixture of
hydrocarbons that exist in a liquid form; they are seen in
underground resevoirs and remain at a liquid state even after being
processed. Since it is made from a mixture of many different
hydrocarbons it can be refined into numerous products such as
gasoline, diesel, oils, and etc..
, Where is crude oil used?
Crude oil is used to run vehicles, heat buildings, and produce
electricity.
What are the main components of crude oil?
Alkanes
Cycloalkanes
Aromatic hydrocarbons
Asphaltenes - large complex molecules that contribute to the density
and viscosity of crude oils.
How is crude oil extracted?
Crude oil can be extracted using the many extraction processes
such as drilling, gas injection/water flooding for secondary recovery,
and then also more EOR methods.
What is the significance of different hydrocarbon chains?
Hydrocarbon chains determine the physical properties of crude oil
including viscosity, density, boiling points. This can change how the
crude oil reacts during extraction and refining.
Combustion of fossil What is combustion?
fuels Combustion is a chemical reaction that occurs when a fuel reacts
with oxygen, producing heat and light. It typically involves the
burning of hydrocarbons in fossil fuels.
General equation for combustion of hydrocarbons:
The general equation for the complete combustion of a fossil fuel is:
fossil fuel + O2 = CO + H2O + Energy
The energy that comes out of the combustion is used for electricity,
heating, etc…
Types of Combustion
● Complete Combustion:
Occurs when there is sufficient oxygen present, resulting in
the production of carbon dioxide (CO₂) and water (H₂O). It
releases maximum energy.
● Incomplete Combustion:
Occurs when there is insufficient oxygen, producing carbon
monoxide (CO) and/or soot (carbon particles) along with
water. This type of combustion releases less energy.
Factors affecting combustion efficiency:
● Oxygen supply: Adequate oxygen is necessary for complete
combustion.
● Fuel composition: Different fuels have different combustion
properties.
● Temperature: Higher temperatures can facilitate more
complete combustion.
Fractional distillation What is fractional distillation?
Fractional distillation is the process where components in a chemical
Topic Sub-topic Information
Crude oil and Fossil fuels What are fossil fuels?
fractional Fossil fuels is a general term for non-renewable energy resources;
distillation some examples are natural gas (heating or electricity generation),
oil, coal (electricity), petroleum products (transportation, or
plastic/chemical production). They are formed from decomposed
remains of plants and animals. These are formed when the remains
of plants/animals are buried below layers of sediment and overtime
the heat and pressure from the ground transforms these remains
into coal, oil, natural gas depending on the conditions.
Why are fossil fuels bad?
They create air pollution that harms our health and generates toxic
gas emissions. Some pollutants they produce are sulphur dioxide,
carbon dioxide, carbon monoxide.
How are fossil fuels collected?
Many extraction methods such as surface mining, underground
mining, horizontal drilling, and hydraulic fracturing are examples of
methods which can collect fossil fuels.
What is the chemical structure of fossil fuels?
The chemical structure of fossil fuels primarily consists of
hydrocarbons. Hydrocarbons are organic compounds which are
made from only hydrogen and carbon atoms. The hydrocarbons
come in different structures:
Alkanes - C and H bonding with only single bonds
Alkenes - C and H bonding with double bonds
Alkynes - C and H bonding with triple bonds
Aromatic hydrocarbons - Alternating single and double bonds and
connected in a ring like structure.
If a hydrocarbon is saturated it contains only single bonds but if it is
unsaturated it contains one or more double or triple bonds.
Saturated carbons are more strong and stable because of their
single bond while the unsaturated hydrocarbons are more reactive
because of their double/triple bonds.
Why are hydrocarbons important in fossil fuels?
Because hydrocarbons are the main component of fossil fuels and
when they are burned they release energy which makes them a
valuable fuel source. They release heat when burned because when
the hydrocarbon bonds are broken new bonds are formed in water
and carbon dioxide and this releases large amounts of energy which
is captured as heat.
Further information What is crude oil?
on crude oil Crude oil is the name of unprocessed oil. Crude oil is a mixture of
hydrocarbons that exist in a liquid form; they are seen in
underground resevoirs and remain at a liquid state even after being
processed. Since it is made from a mixture of many different
hydrocarbons it can be refined into numerous products such as
gasoline, diesel, oils, and etc..
, Where is crude oil used?
Crude oil is used to run vehicles, heat buildings, and produce
electricity.
What are the main components of crude oil?
Alkanes
Cycloalkanes
Aromatic hydrocarbons
Asphaltenes - large complex molecules that contribute to the density
and viscosity of crude oils.
How is crude oil extracted?
Crude oil can be extracted using the many extraction processes
such as drilling, gas injection/water flooding for secondary recovery,
and then also more EOR methods.
What is the significance of different hydrocarbon chains?
Hydrocarbon chains determine the physical properties of crude oil
including viscosity, density, boiling points. This can change how the
crude oil reacts during extraction and refining.
Combustion of fossil What is combustion?
fuels Combustion is a chemical reaction that occurs when a fuel reacts
with oxygen, producing heat and light. It typically involves the
burning of hydrocarbons in fossil fuels.
General equation for combustion of hydrocarbons:
The general equation for the complete combustion of a fossil fuel is:
fossil fuel + O2 = CO + H2O + Energy
The energy that comes out of the combustion is used for electricity,
heating, etc…
Types of Combustion
● Complete Combustion:
Occurs when there is sufficient oxygen present, resulting in
the production of carbon dioxide (CO₂) and water (H₂O). It
releases maximum energy.
● Incomplete Combustion:
Occurs when there is insufficient oxygen, producing carbon
monoxide (CO) and/or soot (carbon particles) along with
water. This type of combustion releases less energy.
Factors affecting combustion efficiency:
● Oxygen supply: Adequate oxygen is necessary for complete
combustion.
● Fuel composition: Different fuels have different combustion
properties.
● Temperature: Higher temperatures can facilitate more
complete combustion.
Fractional distillation What is fractional distillation?
Fractional distillation is the process where components in a chemical
