Gurpreet Kaur 13 Questions 13 Answers 0 Best Answers 277 Points View Profile 4 Gurpreet Kaur Asked: November 26, 2019In: Class 10 Why does the colour of copper sulphate solution change when an iron nail is dipped in it? 4 Explain briefly. 10 sciencechemical reactions and equationschemistryclass 10ncert solutions Share Facebook 3 Answers Voted Oldest Recent Best Answer Adhilsha A Added an answer on November 28, 2019 at 4:51 pm Iron is more reactive than copper. So iron nail replaces copper from copper solution. Thus copper solution loses it’s characteristic colour. CuSO4 + Fe –> FeSO4 + Cu 5 Reply Share Share Share on Facebook Share on Twitter Share on LinkedIn Share on WhatsApp manan Added an answer on November 27, 2019 at 4:34 pm When an iron nail dipped in the copper sulphate solution than iron displaces copper from the copper sulphate because iron is more reactive than copper. Therefore the colour of the copper sulphate solution changes. 4 Reply Share Share Share on Facebook Share on Twitter Share on LinkedIn Share on WhatsApp Tulika 0 Questions 193 Answers 2 Best Answers 624 Points View Profile Tulika Added an answer on February 8, 2021 at 6:26 am The colour of copper sulphate solution is blue. When an iron nail is dipped in the solution of copper sulphate, it forms ferrous sulphate solution and copper metal by the displacement of copper from the solution. The colour of ferrous sulphate is green. That’s why the solution becomes green. 0 Reply Share Share Share on Facebook Share on Twitter Share on LinkedIn Share on WhatsApp Leave an answerLeave an answerCancel reply Click on image to update the captcha. Save my name, email, and website in this browser for the next time I comment.