Question

Determine the molecular formula of a compound having % composition C=26.59%, H= 2.2% and O= 71.19%. Molecular mass of the compound is 90.

Answer 1

Answer:

C2 H2 O4

Explanation:

in this type of problems we should do like this

mass of carbon in the compound = 26.59 x 90 /100 = 24

mass of hydrogen in the compound = 2.2 x 90 /100 = 2

mass of oxygen in the compound = 71.19 x 90 /100 = 64

total mass of the compound = 24 + 2 + 64 = 90

from this number of carbons in the compound = 2 , hydrogens = 2 ,oxygen = 4