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Does longer hydrocarbon molecules have higher boiling points than short hydrocarbon molecules?
Wiki User
∙ 11y ago
yes
Wiki User
∙ 11y ago
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Explain how the size of hydrocarobon molecules affects the strength of intermolecular forces?
The longer the hydrocarbon chain, the stronger the intermolecular forces. This leads to higher boiling point, and these chains are likely to be less useful.
Do elements with higher boiling point have longer or shorter molecule chains?
In general they are longer chained molecules.
Why do foods require longer microwave cooking time at higher atitudes?
The boiling point of water goes down at higher altitudes, and so foods take longer to cook (because the temperature of the food doesn't usually exceed the boiling point of water).See the Related Questions about how elevation effects the boiling point of water.
Will it take longer to boil salt water than fresh water?
Yes. The boiling point of salt water is higher than the boiling point of pure water.
Can Acetylene Gas be used to form long chain hydrocarbons?
I have heard that Methane can be used to form longer chain hydrocarbon fuels, -why not the much higher energy bonded Acetylene?
Explain how the size of hydrocarobon molecules affects the strength of intermolecular forces?
The longer the hydrocarbon chain, the stronger the intermolecular forces. This leads to higher boiling point, and these chains are likely to be less useful.
Do elements with higher boiling point have longer or shorter molecule chains?
In general they are longer chained molecules.
What is the difference between a short-chain and a long-chain hydrocarbon?
short chain hydrocarbons have a low boiling and melting point whereas high chain hydrocarbons have a higher boiling and melting point. Also, short chain hydrocarbons have a low density and higher ones have a higher density. :)
What C7H16 isomer has the highest boiling point?
Heptane - longer the chain, higher the boiling point. Least amount of branches, higher the boiling point.
Why does it take food longer to cook at higher elevations?
At higher elevations the boiling point is lower.
Would you expect to have a longer or shorter cooking time at a high elevation?
Longer. The higher elevation causes the boiling point to decrease. Cook longer at higher elevations.
How does altitude effect boiling points?
The higher the pressure, the higher the boiling point. Boiling occurs when the atmospheric pressure equals the vapor pressure. So, at higher altitudes where the atmospheric pressure is lower, the vapor pressure is also lower which in turn creates a lower boiling point which causes foods to have to cook longer.
How does the boiling point of a hydrocarbon change as its carbon chain length increases?
Generally speaking, boiling points increase as carbon chain length increases. This is because there are more atoms present in the hydrocarbon molecule and therefore more intermolecular forces (eg Van der Waals') that must be overcome. In addition the now heavier molecule requires greater energy (heat) to make the phase change to a gas. However, branching decreases boiling point; branched hydrocarbons cannot pack together as closely as unbranched ones, and so intermolecular forces are less strong. So, for example, the bp is higher for butane than 2-methylpropane (even though they contain the same number of C and H atoms).
Why do foods require longer microwave cooking time at higher atitudes?
The boiling point of water goes down at higher altitudes, and so foods take longer to cook (because the temperature of the food doesn't usually exceed the boiling point of water).See the Related Questions about how elevation effects the boiling point of water.
Will it take longer to boil salt water than fresh water?
Yes. The boiling point of salt water is higher than the boiling point of pure water.
How did chemistry change crude oil to useful materials?
Crude Oil is a mixture of various chemicals, the vast majority being 'hydrocarbons' made from Hydrogen and Carbon atoms only. When they are all mixed together, they have no particular use (crude oil without refining is pretty useless!). However,these hydrocarbon molecules form in chains a bit like necklaces, the longer the chain, the the higher the boiling point (longer chains tangle up). This means that they can be separated by using a process called 'fractional distillation'. Once separated, each hydrocarbon fraction has different properties. In general terms, the smaller the chain, the more useful it will be. Smaller molecules would have a lower boiling point (separate more easily), be more flammable (they need less Oxygen to burn) and be less viscous (all as a result of being made from smaller molecules which don't 'tangle' together). The longer chains like bitumen, can actually be 'cracked' into smaller chains in order to make more useful products like propane. This also forms molecules with 'double bonds'. These can actually be stuck back together to form unnaturally long molecules in a process called polymerisation. This forms molecules not found in nature which can have useful properties. Plastics and man made fibres can be made in this way.
Why do alcohols have a higher boiling point than the equivalent alkanes?
The polarity of the molecules determines the forces of attraction between the molecules in the liquid state. Polar molecules are attracted by the opposite charge effect (the positive end of one molecule is attracted to the negative end of another molecule. Molecules have different degrees of polarity as determined by the functional group present.Principle: The greater the forces of attraction the higher the boiling point or the greater the polarity the higher the boiling point.alcohol=because of inter molecular force eg : hydrogen bonding,van der waals dispersion forces and dipole-dipole interaction that have the capabilities. This attraction are stronger as the molecule get longer and have more electron and also the presence of only one oxygen vs. the two in the acid functional group.
