How does hydrocarbon chain length affect viscosity?
As the hydrocarbon chain length increases, viscosity increases. As the hydrocarbon chain length increases, flammability decreases. hydrogen in the fuels are oxidised, releasing carbon dioxide, water and energy.
Are Longer hydrocarbon chains more viscous?
As the length of the carbon chain increases, the more viscous the hydrocarbon will be. A shorter hydrocarbon chain will be more ‘runny’ than a longer hydrocarbon chain.
Why does viscosity increase with chain length?
As the molecules acquire more energy, they can escape from their mutual traction more readily. Long-chain molecules can also wriggle around more freely at a higher temperature and hence disentangle more quickly.
Which hydrocarbon has the highest viscosity?
octane
In conclusion, the alkane with the greatest viscosity is octane, or answer choice (A).
Why are shorter chain hydrocarbons more useful?
Smaller hydrocarbons, such as petrol, are more useful as fuels than larger hydrocarbons. Since cracking converts larger hydrocarbons into smaller hydrocarbons, the supply of fuels is improved. This helps to match supply with demand.
How does the length of a hydrocarbon affect its properties?
Longer hydrocarbon molecules have a stronger intermolecular force. More energy is needed to move them apart so they have higher boiling points . This makes them less volatile and therefore less flammable .
What makes viscosity increase?
Viscosity generally increases as the temperature decreases. The viscosity of a liquid is related to the ease with which the molecules can move with respect to one another. Thus the viscosity of a liquid depends on the: strength of attractive forces between molecules, which depend on their composition, size, and shape.
What does the viscosity of a hydrocarbon tell you?
As you go up the fractionating column, the hydrocarbons have: lower boiling points. lower viscosity (they flow more easily) higher flammability (they ignite more easily)
What increases viscosity?
What does the size of hydrocarbons affect?
As the hydrocarbon chain length increases, their are more intermolecular forces between the chains. This means more energy is needed to pull the chains apart so boiling points increase as the size of the hydrocarbons increase.
What 3 factors determine the viscosity of a liquid?
Those are:
- Fluid Temperature: Usually the viscosity of liquids decreases with an increase in temperature.
- Flow Conditions: For laminar flow the viscosity of liquid remains constant while for turbulent flow viscosity changes.
- Pressure: With an increase in pressure, the viscosity of gases usually increase.
What are the 4 factors that affect viscosity?
The viscosity of a material is affected by temperature, pressure, nature of fluid, velocity gradient , etc.
What are the factors that influence the viscosity of a liquid?
CONCEPT: Viscosity: The state of being sticky, thick, and semi-fluid inconsistency, due to internal friction of fluids is called viscosity. The viscosity of a material is affected by temperature, pressure, nature of fluid, velocity gradient , etc.
How does the size of the hydrocarbons affect its properties?
Shorter hydrocarbon molecules have weaker intermolecular forces and lower boiling points. They are highly volatile and therefore extremely flammable. The shortest hydrocarbons have very low boiling points. They do not condense, but leave the column in the gas state.
What are 4 factors that affect viscosity?
What increases the viscosity of a liquid?
temperature
Viscosity generally increases as the temperature decreases. The viscosity of a liquid is related to the ease with which the molecules can move with respect to one another.
Why are smaller hydrocarbons better?
Smaller hydrocarbons make better fuels as they are easier to ignite. However, crude oil contains a lot of longer chain hydrocarbons. To break a longer chain hydrocarbon down into a smaller one we use a process known as cracking. Alkene A hydrocarbon that contains at least one carbon to carbon double bond.
What does viscosity of a liquid depend on?
The viscosity of a liquid usually depends on its temperature. Viscosity generally decreases as the temperature increases. Viscosity generally increases as the temperature decreases. The viscosity of a liquid is related to the ease with which the molecules can move with respect to one another.
What are the different factors affecting the viscosity?
Increase in temperature decreases viscosity. Increases in pressure increase viscosity in liquids. In water, it decreases whereas, in gases, it remains the same.
- Increase in temperature decreases viscosity.
- Increases in pressure increase viscosity in liquids. In water, it decreases whereas, in gases, it remains the same.
On which factors viscosity depends upon and why?
Viscous force acting between two layers of liquids depends on, area of the layers the relative velocity of the two layers and distance between two layers.
- area of the layers.
- the relative velocity of the two layers and.
- distance between two layers.
What factors contributes to low viscosity of a liquid?
What causes low viscosity? Low viscosity in liquids is the result of temperature, with higher temperatures decreasing viscosity. Many liquids exhibit low viscosity at room temperature, such as water or alcohol, and other liquids demonstrate low viscosity under increasing heat.
What are the factors affecting viscosity?
What are the 4 factors that can affect viscosity?
What does fluid viscosity depend on?
What affects the viscosity of liquids?
Viscosity is influenced by the composition of the crude oil, the temperature, dissolved gas content, and the pressure. As temperature increases, the viscosity will decrease. As a result, viscosity measurements are always reported with the temperature at which the measurement is made.