Question

Solution of azeotropic nitric acid mixture contain

• A. $32 \% HNO _{3}, 68 \% H _{2} O$ by mass
• B. $68 \% HNO _{3}, 32 \% H _{2} O$ by mass
• C. $50 \% HNO _{3}, 50 \% H _{2} O$ by mass
• D. $30 \% H _{2} O , 70 \% HNO _{3}$ by mass

Answer 1

Answer: (B)

Nitric acid and water is an example of class of azeotrope. This azeotrope has approximate composition, $68 \%$ nitric acid and $32 \%$ water by mass with a boiling point of $393.5\, K$.