Question

Ethanol is converted into ethoxy ethane,
A) by heating excess of ethanol with conc. H2SO4 at 140°C
B) by treating with conc. H2SO4 at room temperature
C) by treating with conc. H2SO4 at 273 K
D) by heating Ethanol with excess of conc. H2SO4 at 443 K

Answer 1

ethanol is converted into ethoxyethane by heating exessof ethanol with conc. h2so4 at 140 c

Answer 2

Answer:

When ethanol is heated with A) concentrated sulphuric acid at 140°C, it gets converted into ethoxy ethane.

Explanation:

In order to obtain ethoxy ethane from ethanol, the ethanol must be subjected to the effect of concentrated sulphuric acid at 413 Kelvin or 140°C as shown below:

$C H_{2} C H_{3} O H \stackrel{H_{2} S O_{4} / 413}{\longrightarrow} C_{2} H_{5} O C_{2} H_{5}$

When the ethanol is treated with more amount of concentrated sulphuric acid at 443 Kelvin we get ethylene as shown:

$C H_{2} C H_{3} O H \stackrel{H_{2} S O_{4} / 443 k}{\longrightarrow}\left(C H_{2}\right)_{2}$