BP - Solubility Trends - Functional Groups Flashcards
What is BP trend for alcohol
Large BP
BP increases with longer chain length due to more dispersion forces
What is solubility trend for alcohols
Short chain length soluble
Long chain length insoluble
Due to more dispersion forces for long chain lengths
What forces are present in alcohols
DF, dipole-dipole, HB
What is BP trend for aldehydes & ketones
Higher BP than alkanes/alkenes but lower BP than those that can form HB
Due to dipole-dipole being moderately strong
What is the solubility trend for short-chains of aldehydes and ketones
They are soluble as they can form HB with water but less soluble than alcohol as aldehydes & ketones cant form extra HB
What is the solubility trend for increasing chain length for aldehydes & ketones
Solubility decreases as carbon chain length increases
DF becomes too significant
What are the forces present in aldehydes & ketones
DF, dipole-dipole
What is the BP trend for carboxylic acid
Very high as it can form lots of HB
What is the solubility trend for carboxylic acid
Very high solubility as it can form lots of HB
What are the forces present in carboxylic acid
DF, dipole-dipole, HB
What is the BP trend for esters
Moderate BP due to dipole-dipole forces
It cannot form HB with other ester molecules
What is the solubility trend for esters
Similar solubility to aldehydes & ketones but less soluble than alcohols and carboxylic acids
Due to its strongest imf is dipole-dipole
What are the forces present in esters
DF, dipole-dipole
What is the BP trend for amines
High BP but lower BP than alcohols
Due to reduced strength of dipole-dipole forces and HBs because N is less electronegative than O so a weaker dipole is formed
What is the solubility trend for amines
Amines are soluble but less soluble than alcohols
Due to N being less electronegative than O