Arrange the following in order of increasing boiling point. CH3CH2OH CH3CH2CH2CH3 CH3OCH2CH3 CH3CH2NH2

CH3CH2CH2CH3 < CH3OCH2CH3 < CH3CH2NH2 < CH3CH2OH is the increasing order of boiling point.

Explanation:

The boiling point of a compound depends on intermolecular forces as vander waals, hydrogen bonding and ionic bonds. The hydrogen bond is the strongest one.

The intensity of these forces depends on the functional group in the compound.

The hydrogen bonding in CH3CH2OH is strong as it is double bond between oxygen and hydrogen. This causes a rise in boiling point of this compound.

CH3CH2NH2 has amide group, it is having less boiling point than CH3CH2OH  because nitrogen is less electronegative than oxygen so forms less strong hydrogen bonds.

CH3OCH2CH3 is an ether and it does not form hydrogen bonds and have weaker vander waal forces

CH3CH2CH2CH3  is having least boiling point because it does not have any polar atom and has only London dispersion forces hence low boiling point.

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explanation:

it can be observed without changing the identity of the object.

it depends on what substance you're talking about as well as many other factors. in quantum mechanics, the observation of particles affects the observers ability to measure certain properties. for example: you can know the velocity of a particle, but you can't know it's position; or you can know it's position, but not it's velocity. it's like trying to find out where a grain of sand is by throwing other grains of sand at it. once you find out where it is, it's been moved. it's also like trying to find an answer to the question of whether or not a tree falling in a forest makes a sound if nobody is there to hear it. paradoxically, the only way to find out is to be there and hear it.