The carbonyl group is carbonyl compounds is denoted as -C=O where there is a dou
ID: 699971 • Letter: T
Question
The carbonyl group is carbonyl compounds is denoted as -C=O where there is a double bond between the C and the O atoms. The electronegativity values of C and O atoms are 2.55 and 3.44; the electronegativity difference is (3.44 – 2.55) = 0.89. Since the electronegativity difference is greater than 0, the C=O group is polar.
The C atom is attached to two alkyl group in a carbonyl compound and the polarity of these groups attached to the C atom has a tremendous influence on the solubility of the compound. In small carbonyl compounds, the polarity of the C=O group decides solubility. The O atom may participate in H-bonding and solubilize in water. However, in large carbonyl compounds, the polarity or the lack of polarity of the alkyl groups overrides the polar effect of the C=O group and the solubility is guided by the solubility of the alkyl groups. Alkyl groups are known to be non-polar and carbonyl compounds with large alkyl substituents are sparingly soluble in water or insoluble. Such compounds are more soluble in organic solvents like hexane or ether.
Explanation / Answer
Does carbonyl group help with solubility
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