Question

A dehydration reaction is a reaction in which there is _______ .

• A. an addition of water
• B. a loss of water
• C. an addition of hydrogen
• D. a loss of hydrogen

Answer 1

The correct option is B a loss of water

A dehydration reaction is a reaction in which a water molecule is removed from the reactant. Concentrated sulphuric acid is a commonly used dehydrating agent. For example,

${\mathrm{CH}}_3{\mathrm{CH}}_2\mathrm{OH}\underset{}{\overset{\mathrm{con}.H_2{\mathrm{SO}}_4}{\to }}{\mathrm{CH}}_2={\mathrm{CH}}_2+H_{2}O\mathrm{Ethanol}\mathrm{Ethene}\mathrm{Water}$