8
An organic dibasic acid contains
C- 17.39% H=1.45%, Br = 57.979
The vopour density of the acid
is 138. calculate the empirical
and molecular formula of the
acid (At. Wt. Br=80,(-12, 0=16, H=1)
Answers
Answered by
1
Answer:
C
2
H
2
O
4
C:H:O=
12
26.7
:
1
2.2
:
16
71.1
=1:1:2
empirical formula is CHO
2
Mol. mass of diethyl ester= 2×72 =146u
Formula mass of ethyl group (−CH
2
)= 29u
In diethyl ester two ethyl group must have replaced the H atoms of dibasic acid
The mol. mass of acid =146−(2×29)+2=90 u
Molecular formula of acid=
45
90
×CHO
2
=C
2
H
2
O
4
Similar questions