Is it because CH3CH(OH)CHO is chiral? What makes it chiral? What is the lewis structure?
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the middle C in your sequence is chiral
it is attached to 4 diffferent groups - that is what makes it chiral
-OH
-H
-CH3
-COH
it is attached to 4 diffferent groups - that is what makes it chiral
-OH
-H
-CH3
-COH