Question

Ether is obtained from ethyl alcohol in presence of $H_{2}S{O}_4$ at?

• A. 113 K
• B. 443 K
• C. 413 K
• D. 213 K

Answer 1

Answer: (C)

413 K

Acid-catalyzed method of preparing symmetrical ethers from primary alcohols is temperature dependence. At ${110}^{\circ }C$ or 383 K to ${130}^{\circ }$C or 403K, a $S_{N}2$ reaction of the alcohol conjugate acid leads to an ether product. At higher temperatures (over ${150}^{\circ }C$ or 423 K) an E2 elimination takes place and instead of ether, an alkene is obtained.

Thus, Ether is obtained from ethyl alcohol in presence of $H_{2}S{O}_4$ at 413 K.