Question

Vapour density of an organic compound is 23. It ontains 52.17% of carbon and 13% of hydrogen. The compound gives iodoform test. The compound is :

• A. Ethanol
• B. Dimethyl ether
• C. Acetone
• D. Methanol

Answer 1

Answer: (A)

Ethanol

Answer 2

We know that, moleculer mass = 2 $\times$ v.d. $\Rightarrow$ molecular mass of the given organic compound is 46. So, Formula of the compound = ${ (C_2H_6O)_n}$ ${ n = \frac{46}{46} = 1 \, \Rightarrow }$ molecular formula is ${ (C_2H_6O)}$ The compound also gives iodoform test so, it would contain -OH group or As our molecular formula contains two carbon atoms. So, the organic compound is ethanol.