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Octane has a higher boiling point than pentane because octane has a larger number of carbon atoms than propane
Daija Kreiger
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Which has the highest boiling point hexane or pentane?
Octane. The boiling point of straight-chain alkanes increases within its homologous series (meaning methane has a lower boiling point than ethane, which is lower than propane, etc). Hexane : Boiling Point 69 o C Octane : Boiling Point 125.5 o C
Why do isomers of pentane have different boiling points?
3-methylheptane is a branched chain alkane while n-octane is straight chain. Branched chain molecules have lower boiling points because they cannot line up together for the intermolecular forces to be as effective.
Why n-pentane has higher melting point than neopentane?
It is because n-pentane is a straight chain hydrocarbon meaning it has more surface area to reach the boiling point, neopentane has significantly less surface area that's why it will boil quicker than n-pentane. The more branched molecule, the lower is its boiling point will be & the less branched molecule, the higher its boiling point will be. For combustion energy the opposite holds true, the more branched molecule has a higher energy than an unbranched one.Hope You Like My Answer...By rananeeraj168@gmail.com in facebook
How does molecule size affect boiling point?
With a bigger size there are stronger London forces. London forces are also known as Dispersion forces and van der Waal forces. These forces become stronger as the size of the molecule increases. Butane, C4H10, is a gas with a relative size of 58 and a boiling point of ~ -1 ºC. Octane, C8H18, is a liquid with a relative size of 114 and a boiling point of 125 ºC. The two molecules differ in size only but as octane is bigger it has a higher boiling point due to the dispersion forces.
Why is the boiling point of butanone higher than pentane?
Butane is a smaller molecule, so the London Dispersion forces between molecules of butane hold the molecule together better than the London Dispersion forces of a hexane molecule. In short, it requires more energy to separate butane molecules from each other than hexane molecules.
Why does heptane have a higher boiling point than pentane?
The carbon skeleton of pentane contains 5 carbon atoms, the carbon skeleton of heptane contains 7 carbon atoms. The main reason for increased boiling point are London dispersion forces, these increase the with the number of electrons- so as heptane has more electrons its dispersion forces are greater and the boiling point is higher. Another contributory factor is the mass as the molecule of heptane is heavier and this means it takes more energy to get it to vaporise.
Which has the highest boiling point hexane or pentane?
Octane. The boiling point of straight-chain alkanes increases within its homologous series (meaning methane has a lower boiling point than ethane, which is lower than propane, etc). Hexane : Boiling Point 69 o C Octane : Boiling Point 125.5 o C
Why do isomers of pentane have different boiling points?
3-methylheptane is a branched chain alkane while n-octane is straight chain. Branched chain molecules have lower boiling points because they cannot line up together for the intermolecular forces to be as effective.
Why n-pentane has higher melting point than neopentane?
It is because n-pentane is a straight chain hydrocarbon meaning it has more surface area to reach the boiling point, neopentane has significantly less surface area that's why it will boil quicker than n-pentane. The more branched molecule, the lower is its boiling point will be & the less branched molecule, the higher its boiling point will be. For combustion energy the opposite holds true, the more branched molecule has a higher energy than an unbranched one.Hope You Like My Answer...By rananeeraj168@gmail.com in facebook
Who would use octane gas the most?
Octane is a liquid, not a gas. Its boiling point is considerably higher than that of water.
Why does octane have a higher boiling point then water?
Octane is a straight chain molecule with a large surface area and stacks easily with other octane molecules. This increases the strength of the London dispersion forces that keep the octane molecules attracted to each other. The London dispersion forces on octane are greater than for smaller straight chain molecules because octane is both heavier and has more electrons that make it more polarizable.
Do fuel efficient cars typically use higher octane gasoline?
No, higher octane fuel is only necessary for higher performance cars. Highly efficient cars can usually use the lowest octane fuels, because they are not designed for performance.
Is it harder to ignite a lower or higher-octane gasoline?
It is harder to ignite higher octane gasoline - the octane rating expresses the compound's resistance to pre-ignition (often called "ping") Low octane fuels tend to 'ping' more than high octane fuels because they ignite more easily.
Which has the higher boiling point NaCl or HCl and why?
Sodium chloride has a higher boiling point because is a salt with ionic bonds.
If a car has been given a certain type of gas for a long time would it hurt to start giving it different type of gas?
It would only hurt if the car required 89 octane or 92 octane and you went to a lesser octane. Those cars are engineered to run on a higher octane. A car engineered for the lower 87 octane might actually see some performance improvement by going to a higher octane once or twice, because the higher octane will help to clean the injectors a "little". Not much though. Over all there is no real significance to using the higher octane. The higher the octane level, the "richer" or "heavier" the fuel is. So if the car is not manufactured for the higher octane, you will eventually cause carbon build up at a faster rate than normal.
Which is hotter the boiling water or oil?
Boiling oil because it boils at a higher temperature
Can use 89 octane gas in passat?
You can use whatever octane you want, generally you shouldn't have to go to higher octane unless your car requires it. If your decidin to go higher because you feel a better power increase this is a sign you need tune up
