Question

An organic compound containing carbon, hydrogen and oxygen contains 40% carbon and 6.67% of hydrogen.if its relative vapour density is 30.calculate the empirical formula,molecular formula and deduce the structural formula.

Answer 1

Answer:

Correct answer is

C2H4O2

an organic compound contain 40% carbon ,6.66% hydrogen  and 53.33% oxygen 

mole of carbon = 4 mole 

for carbon 12240= 3.33             3.333.33= 1 atom 

for hydrogen  16.66= 6.66             3.336.66= 1 atom 

for oxygen  1653.33= 3.33             3.333.33= 1 atom 

emperical  formula CH2O

mass 30 gram C is 60/30  = 2 atom 

 so formula is C2H4O2