Question

How many hydrogen atoms are replaced by D in the following tautomerization?
`CH_(3)-overset(Ph)overset(|)C=underset(Ph)underset(|)C-overset(O)overset(||)C-CH_(3)underset(D_(2)O)overset(D^(o+))rarr`

Answer 1

Correct Answer - 6
H-atoms which are present in conjugation with
`-overset(O)overset(||)C-` are replaced by D.
`CH_(3)-overset(CH_(3))overset(|)C=underset(CMe_(3))CH_(3) underset(D_(2)O"Longtime")overset(D^(+))rarrCD_(3)-overset(CMe_(3))overset(|)C=underset(CMe_(3))underset(|)C-CD_(3)`