A compound with empirical formula ch2 has a vapour density of 30 its m

1.	A compound with empirical formula ch2 has a vapour density of 30 its molecular formula is
Answer» we KNOW that VAPOUR density=molecular MASS/2 so, molecular mass of the compound is 60 now,EMPIRICAL mass=12+16+2=30 molecular mass=60 n=molecular mass/empirical mass n=60/30 n=2 so,molcular formula will be n×empirical formula=2×CH2O =C2H4O2 so ANSWER is option B)

A compound with empirical formula ch2 has a vapour density of 30 its molecular formula is

Answer»

we KNOW that VAPOUR density=molecular MASS/2

so, molecular mass of the compound is 60

now,EMPIRICAL mass=12+16+2=30

molecular mass=60

n=molecular mass/empirical mass

n=60/30

n=2

so,molcular formula will be n×empirical formula=2×CH2O

=C2H4O2

so ANSWER is option B)