Question

The ration of the mass percentages of 'C & H' and 'C & O' of a saturated acyclic organic compound 'X' are 4 : 1 and 3 : 4 respectively. Then, the moles of oxygen gas required for complete combustion of two moles of organic compound 'X' is____.

Numerical Value Type

Answer 1

Ans. 5

Sol. Mass ratio of C : H is 4 : 1 $\implies$ 12 : 3

& C : O is 3 : 4 $\implies$ 12 : 16

so

	mass	mole	mole ratio
C	12	1	1
H	3	3	3
O	16	1	1

Empirical formula $\implies$ CH₃O

as compound is saturated acyclic so molecular formula is C₂H₆O₂.

so required moles of O₂ is 5

Comments

How did you find the molecular formula ??