Vapour density =75
therefore Molar mass of acid = 75*2
now it is given it contains 32 %C
64% O
and 4% h
we can consider it as in 100 gram of this acid 32 gram is C 64 gram is O and 4 gram is H
now using unitary methode since 100 gram contain 32 gram C ------>1 gram contain
gram C
and
gram conatin
=48gram
there fore 4 moles of carbon
simillarly 150*64/100=96 ====6 moles O and 6 gram h
now the acis id C4 O6 H6
