Question

On adding zinc pieces to aqueous $FeC{l}_3$, colour changes from deep yellow to:

• A. Black
• B. Light green
• C. Brown
• D. Purple

Answer 1

Answer: (B)

Aqueous $FeC{l}_3$ is acidic and on adding zinc, nascent hydrogen is produced which reduces deep yellow $FeC{l}_3$ solution to light green $FeC{l}_2$ solution.