When Butan - 2 -ol is dehydrated using sulphuric acid, the concentration of acid and temperature needed respectively is

• Correct answer
  A

  600/0 Conc. and 373 K
• B

  $200 / 0$ conc. and $373 \mathrm{~K}$
• C

  $200 / 0$ conc. and $363 \mathrm{~K}$
• D

  $950 / 0$ conc. and $373 \mathrm{~K}$

Solution

When Butan-2-ol is dehydrated using sulphuric acid, the concentration of acid and temperature needed respectively is $\mathrm{6 0 \%}$ cone. and $373 \mathrm{~K}$. Secondary alcohol $\left(2^{\circ}\right)$ is dehydrated by heating with $60 \% \mathrm{H}_{2} \mathrm{SO}_{4}$ at $373 \mathrm{~K}$.

Hence, the correct answer is option: 'A'.