Question

What compounds are used in reaction of ester preparation?

• A. An organic acid and an aldehyde
• B. An alcohol and an aldehyde
• C. An acid and a ketone
  
• D. Two alcohols
  
• E. An alcohol and an organic acid

Answer 1

The correct option is E An alcohol and an organic acid

An alcohol and an organic acid are used in the reaction of ester preparation.
For example, ethyl acetate is prepared by the reaction of acetic acid with ethanol in presence of conc sulphuric acid or dry $HCl$ gas.
$C{H}_{3}COOH+C{H}_{3}C{H}_{2}OH\underset{DryHClgas}{\overset{conc.H_{2}S{O}_4}{\to }}C{H}_{3}COO{C}_2{H}_5$