Multiple choice

What are the reddish brown precipitates found at the bottom of the beaker, when a beaker containing copper sulphate solution and a few iron nails is left for sometime?

  1. Copper

  2. Iron

  3. Copper sulphate

  4. Iron sulphate

  5. Mixture of copper and iron
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

When iron nails are kept in a beaker containing copper sulphate solution, the displacement reaction takes place. As iron is more reactive than copper, it displaces copper from the copper sulphate solution. The iron nail becomes brownish in colour and the blue colour of copper sulphate solution fades. Thus, it becomes iron sulphate and copper. This copper is reddish brown in colour and precipitated at the bottom of the beaker.

Keep practicing — related questions