First we need to find empirical formula.
∴
C:H:O=1:1:2 Hence, empirical formula is
CHO2.
Molecular mass of diethyl ether is
(C2H5OC2H5) 2×73=146u ∴ Formula mass of ethyl group
=29u In diethyl ether two ethyl group must have replaced the
H-atom of dibasic acid.
∴ The molecular mass of acid
= Molecular mass of diethyl ether
−(2× mass of ethyl group
)+ mass of hydrogen
=149−(2×29)+2=90u ∴ Molecular formula of acid
=| Molecularmassofacid |
| Empiricialmassformula |
×CHO2 =×CHO2 =×CHO2=2×CHO2 ∴ Molecular formula of acid
=C2H2O4