A compound A with formula C_(4)H_(10)O_(3) on acylation with acetic anhydride gives another compound with molecular mass 190. The number of hydroxyl groups in the compound A are

A compound A with formula C_(4)H_(10)O_(3) on acylation with acetic an

1.	A compound A with formula C_(4)H_(10)O_(3) on acylation with acetic anhydride gives another compound with molecular mass 190. The number of hydroxyl groups in the compound A are
Answer» 2 1 3 Unprdictable Solution :`-OH underset(-H^(+))overset(+CH_(3)COO^(-))RARR - OCOCH_(3)` One `-OH` group on acylation BRINGS about a change in MOLECULAR mass = 42 Molecular mass of `C_(4)H_(10)O_(3)` `= 4 xx 12 + 10 xx 1 + 3 xx 16 = 106` Actual increase in molecular mass `= 190 - 106 = 84` `:.` Number of `-OH` groups `= (84)/(42) = 2`