The molecule of Methane is CH4; 1 carbon and 4 hydrogen atoms Butane's molecule C4H10 has 4 Carbon atoms and 10 hydrogen. So Butane has more parts to burn (connect to oxygen/oxidise) per molecule, hence a higher calorific value.
The M.P. and B.P. of any substance is related to the intermolecular forces that act.
Butane, which is a saturated hydrocarbon with 4 Carbon atoms, is heavier than Propane, which has only 3 Carbon atoms. Because of this, Butane has stronger Van der Waals forces (or London forces) than Propane. This means that it requires more energy to overcome the intermolecular forces in Butane, resulting in the relatively higher M.P. and B.P.
Note that the London forces are the only forces that act as intermolecular forces in the case of Butane and Propane.
The geometric structure of butane allows closer packing between molecules than can be achieved with 2-methylpropane, increasing the total van der Waal's forces in the butane solid and raising its melting point compared with that of 2-methylpropane.
Both are isomers. As branching increases (as in 2-methylpropane) the intermolecular force of attraction decreases, and hence melting point decreases.
This is because butanes chain length is longer than propanes making it harder to reach its boiling point
Yes, the molecular mass of propane is 44 while that of butane is 58, higher is the molecular mass of an alkane higher would be the boiling point therefore less would be the volatility.
Butane because it contains more atoms and is heavier.
benzene has lower boiling point than water
C20h42
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
Yes, the molecular mass of propane is 44 while that of butane is 58, higher is the molecular mass of an alkane higher would be the boiling point therefore less would be the volatility.
Butane because it contains more atoms and is heavier.
because of difference in structure propane (C3H8) has bigger molar mass then butane (C4H10) the molecules of butane are heavier and the forces between them are stronger as in propane, because of this more energy is needed to transfer liquid butane to gas
I think propane is higher??
Butane has a boiling point of 0.5 degrees centigrade
benzene has lower boiling point than water
C20h42
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
Propane, which has a lower flash point than butane.
Octane has a higher boiling point than pentane because octane has a larger number of carbon atoms than propane
141.1 C from ptcl.chem.ox.ac.uk/MSDS/PR/propanoic_acid.html
The boiling point of butane is roughly -1.1oC.