Viscosity reduction increases with hydrocarbon concentration. High temperature increases the viscosity reduction of hydrocarbons. The higher the molecular weight of the hydrocarbon, the lower the viscosity.

Are hydrocarbons highly viscous?

Even more strikingly, long-chain hydrocarbons like squalene (C30H62) have an order of magnitude greater viscosity (~31 mPa·s at 25 °C) than shorter n-alkanes.This is also the reason Oils tend to be highly viscousas they are usually composed of long-chain hydrocarbons.

How does the size of a hydrocarbon molecule affect its viscosity?

Distillates are a group of hydrocarbons with boiling points in a specific range. …as you enter the fractionation column, the hydrocarbon molecules get smaller and have: lower boiling point. lower viscosity (they flow easier)

What makes hydrocarbons sticky?

Viscosity by strength of intermolecular forces Especially the shape of liquid molecules. Liquids whose molecules are polar or can form hydrogen bonds are generally more viscous than similar non-polar substances.

Which hydrocarbon is more mobile?

When a hydrocarbon is unsaturated, it has some double bonds.these are called Olefins. The shorter the chain, the more fluid (less sticky). The shorter the chain, the lower the boiling and melting point.

Hydrocarbon Power! : Crash Course Chemistry #40

38 related questions found

What happens when hydrocarbons increase in size?

As the length of the hydrocarbon chain increases, boiling point rise. This means that fuels with long hydrocarbons will have higher boiling points than fuels with shorter hydrocarbons. Long chains of hydrocarbons become easily entangled and form more interactions than short chains.

What does the size of the hydrocarbons affect?

Longer hydrocarbon molecules have stronger intermolecular forces. It takes more energy to separate them, so they have a higher boiling point. This makes them less volatile and therefore less flammable.

Which liquid has the highest viscosity?

One of the most viscous liquids known is Asphalt, also known as bitumen, bitumen, or tarDemonstrating its fluidity and measuring its viscosity was the subject of the longest-running scientific experiment, which began in 1927 at the University of Queensland, Australia.

What is high viscosity?

a highly viscous liquid have high resistance (like more friction) And flow is slower than low viscosity fluids. Thinking about viscosity in everyday terms, the easier the fluid moves, the lower the viscosity. … honey will move slower than water, so honey will have a greater viscosity.

Is water sticky?

Viscosity is the property of a fluid that has a high resistance to flow. We usually think of liquids like honey or motor oil as viscous, but compared to other substances with a similar structure, water is viscous. . Due to the polarity of the molecules, water molecules have strong cohesion.

Which fractions are the hardest to ignite?

The hydrocarbons in the different fractions differ in these properties. E.g, Asphalt Score Hydrocarbons containing more than 35 carbon atoms. Their boiling points are well above room temperature. They are very difficult to ignite and have high viscosity (they are difficult to flow).

Which alkanes are more viscous?

all liquid alkane It is less dense than water and therefore floats on it. The viscosity of liquid alkanes increases with the number of carbon atoms.

How do you know which hydrocarbon is more flammable?

When you enter the fractionation column, hydrocarbons have:

1. The boiling point is lower.
2. lower viscosity (they flow more easily)
3. higher flammability (they ignite more easily)

Does temperature affect viscosity?

Liquid viscosity is greatly affected by heat.This Viscosity decreases with increasing temperature.

Are solids sticky?

in solids.This Viscous force generated during fluid flow Not to be confused with elastic forces in solids due to shear, compressive or tensile stress. …in contrast, many « solids » (even granite) will flow like liquids, albeit very slowly, even at arbitrarily small pressures.

What are the factors that affect viscosity?

Viscosity is affected by ingredients Crude oil, temperature, dissolved gas content and pressure. Viscosity decreases as temperature increases. Therefore, viscosity measurements are always reported along with the temperature at which the measurement was taken.

Is toothpaste high viscosity?

Due to the high viscosity of toothpaste products (70,000 – 100,000 cps).

The higher the viscosity, the thicker it is?

This Liquids are more viscous, the thicker, the greater the flow resistance. … temperature affects the viscosity of most materials.

What happens when viscosity increases?

Viscosity is a measure of an oil’s resistance to flow. It decreases (thinners) and increases (or thickens) with increasing temperature As the temperature decreases… a general increase in viscosity at higher temperatures, resulting in lower fuel consumption and wear.

What liquid has the lowest viscosity?

8cST) fluid. Everything I’ve come across with low viscosity is flammable – acetone, ether, silicone oil, fuel, etc. I found something confusing in my research. Acetone is 3 times less viscous than water but 2.5 times heavier.

Which of the following has the highest viscosity?

The correct answer is Honey. Viscosity: SI unit: Pascal seconds (Pa·s) or kg·m-1·s-1. It is a property of a liquid that represents the internal resistance to motion of its different layers.

Which of them has the highest viscosity?

(C) oxygen: Oxygen is a gas and therefore has a viscosity. Gases can move freely and occupy the entire space available to them. Gases can move more freely than liquids.

Do hydrocarbons have high melting points?

Generally speaking, Solid alkanes generally do not have high melting points. Linear alkanes tend to be at a maximum because of the melting point of CH3(CH2)98CH3 (115 °C) [239 °F]) with CH3(CH2)148CH3 (123 °C [253 °F]). The viscosity of liquid alkanes increases with carbon number.

Why are smaller hydrocarbons more useful?

smaller hydrocarbons, such as gasoline, are more useful as fuel instead of larger hydrocarbons. Improved fuel supply as cracking converts larger hydrocarbons into smaller ones. This helps match supply and demand. It produces olefins.

Why are there no hydrogen bonds in hydrocarbons?

Alkanes are hydrocarbons. This means that the only atoms found in these molecules are carbon and hydrogen. Because the difference in electronegativity between carbon and hydrogen is smallalkanes cannot form hydrogen bonds with water.