JEE Main 2022 · 28 Jun · Shift 2 · Chemistry Q88

← JEE Main 2022 · 28 Jun · Shift 2

ChemistryInteger+4 / -1Question 88 of 90

The complete combustion of 0.492 g of an organic compound containing 'C', 'H' and 'O' gives 0.793g of $\mathrm{CO_2}$ and 0.442 g of $\mathrm{H_2O}$ . The percentage of oxygen composition in the organic compound is ______. (nearest integer)

Your answer

Answer and worked solution

Official answer: 46

C $0.793\times\frac{12}{44}=0.2163$ g, H $0.442\times\frac2{18}=0.0491$ g, O $0.492-0.2654=0.2266$ g.

Percentage $\frac{0.2266}{0.492}\times100\approx46$ .

Answer: 46

Topics:Qualitative and quantitative analysis of organic compounds

← Previous question Next question →

JEE Main 2022 · 28 Jun · Shift 2, Chemistry question 88