Aldehydes Flashcards
What planar carbon compounds are studied as part of your course?
(7)
Alkenes
Alkynes
Aldehydes
Ketones
Carboxyl acids
Esters
Aromatic compounds
What is the functional group of aldehydes?
The -CHO group
What is the general formula of the aldehydes?
RCHO
What is the general formula for the homologous series of aliphatic aldehydes?
CnH2n+1 CHO
How are aldehydes named?
They are named from the parent alkane by changing the -e ending to -al
What is the aldehyde corresponding to methane?
Methanal
What is the aldehyde corresponding to ethane?
Ethanal
What is the aldehyde corresponding to propane?
Propanal
Name the aldehyde given by the formula HCHO
Methanal
Name the aldehyde given by the formula CH3CHO
Ethanal
Name the aldehyde given by the formula C2H5CHO
Propanal
Name the aldehyde given by the formula C3H7CHO
Butanal
Name the aldehyde given by the formula C3H7CHO
2-methylpropanal
What is the formula of Methanal
HCHO
What is the formula of ethanal?
CH3CHO
What is the formula of propanal?
C2H5CHO
What is the formula of butanal?
C3H7CHO
What is the formula of 2-methylpropanal
C3H7CHO
Where must the aldehyde functional group always occur?
At the end of the carbon chain
What is the structure of the carbonyl group
O
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-C
Describe the bond angles in the carbonyl group.
The carbonyl group and the atoms to which it is bonded all lie in the one plane with all bond angles of 120 degrees
What is the main difference between the C = O and the C = C group in ethene?
The carbonyl group is strongly polar
Why is the carbonyl group strongly polar?
Due to the different electronegativity values of carbon and oxygen
