5.9 describe the trend in boiling point and viscosity of the main fractions
The lower down the fraction, the higher the boiling point. The higher the boiling point, the lower the viscosity, the lower the boiling point the higher the viscosity.
Recall that as you go up the fractionating column, the fractions:
• have lower boiling points as they have a lower relative molecular mass/fewer number of carbon atoms; fractions with lower boiling points are collected higher up the column
• have a lower viscosity (=less thick) i.e. they are ‘runnier’.
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ReplyDeletethis one says the opposite!!!! HELPP!
Recall that as you go up the fractionating column, the fractions:
ReplyDelete• have lower boiling points as they have a lower relative molecular mass/fewer number of carbon
atoms; fractions with lower boiling points are collected higher up the column
• have a lower viscosity (=less thick) i.e. they are ‘runnier’.
I think this is correct, anybody know??