Question

The name and the colour of the precipitate formed when sodium hydroxide is added to $FeC{l}_3$ is ___ and ___ respectively

• A. Sodium ferrate and Colourless
• B. Sodium chloride and Golden
• C. Iron(II) hydroxide and Dark brown
• D. Iron(III) hydroxide and Reddish brown

Answer 1

The correct option is D Iron(III) hydroxide and Reddish brown

NaOH reacts with $FeC{l}_3$ to give sodium chloride and iron(III) hydroxide, which is reddish brown in colour is precipitated, as shown below:

$FeC{l}_3+3NaOH$$\to$$3NaCl+Fe(OH{)}_3\downarrow$