Question

calculate the imperial formula of organic compound containing 26.66 % of carbon and 2.22 % of hydrogen with the rest being oxygen

Answer 1

Answer:

each atom and from that the number atoms of C, H, and O. Mw C = 12, Mw H =1.008, Mw O =16

For Carbon: gC/90 = 0.2666, so C g= 90*0.2666 = 24g C, 24/12 = 2C

For Hydrogen: gH/90 = 0.0222, so H g = 0.0222*90 = 1.998 g H, 1.990/1.008 = 2H

For Oxygen: gO/90 = 0.7112, so O g = 0.7112*90 =64g O, 64/14 = 4O

Empirical Formula is C2H2O4

Molecular Formula is oxalic acid HOOC-COOH