Question

When sodium hydroxide is added to ferric chloride solution a reddish brown precipitate is formed The precipitate is separated from the mixture by the process of __________

• A. Evaporation
• B. Sublimation
• C. Fractional distillation
• D. Filtration

Answer 1

The correct option is D Filtration

Ferric hydroxide precipitates in the reaction as red ppt.which can be separated from the solution by the method of filtration. In this method, physical or mechanical operation is employed for separation of solids from fluids by interposing a medium through which only the fluid can pass. The fluid that passes through is the filtrate.

Filtration can be used to separate ferric hydroxide precipitate from the mixture.

FeCl3 + 3NaOH → Fe(OH)3↓ + 3NaCl

Hence, the correct option is $\text{D}$