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Why is the melting point of ethane much lower than the melting point of methane?
Wiki User
∙ 14y ago
The melting point of ethane and methane is almost the same.
Ethane - mp = -183 oC
Methane - mp = -182 oC
However, the boiling point of ethane is higher at -88.6 oC compared to methane at -162 oC.
Generally, the larger the molecule the higher the boiling point. This trend can be seen in the hydrocarbon series.
Methane (molar mass, Mr = 16) bp = -162 oC
Ethane (Mr = 30) bp = -88.6 oC
Propane (Mr = 44) bp = -42.2 oC
Butane (58) bp = -0.5 oC
Pentane (72) bp = 36.3 oC
and so on.
The trend is that boiling points increase as size of molecule increases. The intermolecular bonds are stronger as the larger molecules can form temporary electrostatic interaction areas. These intermolecular forces are called van der Waal forces or dispersion forces.
Wiki User
∙ 14y ago
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Why the melting point of methane is high?
Methane has an extremely low melting point. This is due to weak intermolecular attraction.
What point does it become a liquid?
The boiling point of a substance is the point at which that substance will change between being a gas and a liquid. For example, the boiling point of water is 100oC, so water vapour will change to water at this temperature. The boiling point of Methane is -161oC, so any temperature above this, Methane will be in gas form.
Which has a lower melting point HFor HBr?
HBr has a lower melting point of -86.8 degrees C. HF has a melting point of -83 degrees C.
Is the melting point of bromine higher or lower than the melting point of chlorine?
The melting point of bromine is -7,2 0C. The melting point of chlorine is -101,5 0C.
Which petroleum product has the lowest boiling point?
The fraction of crude oil that has the lowest boiling point is the Liquified Petroleum Gas, which is a mixture of small hydrocarbons(methane, ethane, etc).
Why the melting point of methane is high?
Methane has an extremely low melting point. This is due to weak intermolecular attraction.
What has a lower melting point than ionic solids?
Covalent compounds have a lower melting point.
What point does it become a liquid?
The boiling point of a substance is the point at which that substance will change between being a gas and a liquid. For example, the boiling point of water is 100oC, so water vapour will change to water at this temperature. The boiling point of Methane is -161oC, so any temperature above this, Methane will be in gas form.
What usually has a lower melting point than ionic solids?
Covalent compounds have a lower melting point.
Which has a lower melting point HFor HBr?
HBr has a lower melting point of -86.8 degrees C. HF has a melting point of -83 degrees C.
How does IMF affect the boiling point or melting point of a substance?
The stronger the IMF, the higher the boiling point and the lower the melting point. The weaker the IMF, the lower the boiling point and the higher the melting point.
Which solid is more likely to have the lowest melting point an ionic solid or molecular solid?
Molecular Solids have a lower melting point
What is the Melting point methane gas?
Methane gas melts at −184°C for more info refer the chemistry dictionary.
Why copper(ii)chloride has a high melting point than ethane?
Because it is a non metal and does not conduct electricity
Is the melting point of bromine higher or lower than the melting point of chlorine?
The melting point of bromine is -7,2 0C. The melting point of chlorine is -101,5 0C.
Which of these alkanes methane ethane propane and butane expect to have the highest boiling point?
Butane because it contains more atoms and is heavier.
How is melting point of silicon dioxide lower than melting point of diamond?
Smell
