Observing the action of Zn, Fe, Cu and Al metals on the salt solutions


Aim

a) To observe the action of Zn, Fe, Cu and Al metals on the following salt solutions:

  • ZnSO4 (aq)
  • FeSO4 (aq)
  • CuSO4 (aq)
  • Al2(SO4)3 (aq)
  • b) Arrange Zn, Fe, Cu and Al metals in the decreasing order of reactivity based on the above result.

    Apparatus and Chemicals

    • Test tubes
    • Test tube stand
    • Distilled water
    • Four metals (Fe, Cu, Al, and Zn)
    • FeSO4 solution
    • CuSO4 solution
    • Al2(SO4) solution
    • ZnSO4 solution
    • Sand paper

    Principle

    A more reactive metals displaces a less reactive metal from its salt solution. The reactivity of these four metals is in the order Al > Zn > Fe > Cu. As such aluminium will displace Zinc, iron and copper.

    2Al + 3ZnSO4 → Al2(SO4)3 + 3Zn
    2Al + 3FeSO4 → Al2(SO4)3 + 3Fe
    2Al + 3CuSO4 → Al2(SO4)3 + 3Cu

    Zinc will displaces iron and copper from their solutions. But it will not displaces aluminium from its salt solution.

    Zn + Al2(SO4)3 → No reaction
    Zn + FeSO4 → ZnSO4 + Fe
    Zn + CuSO4 → ZnSO4 + Cu

    Iron will displace only copper from its salt solution.

    Fe + CuSO4 → FeSO4 + Cu

    Copper can’t displace Al, Zn and Fe

    Procedure

    • Clean the metals with sand paper and cut into small pieces.
    • Take 10 mL each of ZnSO4, FeSO4, and CuSO4 solutions in three test tubes. Add 1-2 small pieces of aluminium to each test tube. Record your observation in the table.
    • Take 10 mL each of Al2(SO4)3, FeSO4 and CuSO4 solutions in three test tubes. Add 1-2 small pieces of Zinc to each test tube. Record your observations in the table.
    • Take 10 mL each of Al2(SO4)3, FeSO4 and CuSO4 solutions in three test tubes. Add 1-2 small pieces of iron to each test tube. Record your observations in the table.
    • Take 10 mL each of Al2(SO4)3, FeSO4 and FeSO4 solutions in three test tubes. Add 1-2 small pieces of copper to each test tube. Record your observations in the table.

    Observations

    Metal added Al2(SO4)3 sol. ZnSO4 sol. FeSO4 sol. CuSO4 sol.
    Aluminium —–Zn is displaced Fe is displaced Cu is displaced
    Zinc No reaction —– Fe is displaced Cu is displaced
    Iron No reaction No reaction —– Cu is displaced
    Copper No reaction No reaction No reaction —–

    Inference : The order of reactivity of these four metals is ; Al > Zn > Fe > Cu

    Precautions

    • Use only distilled water for the experiment.
    • Add 1-2 drops of conc. H2SO4 to clear the solutions of metals salts (if needed).
    • Thoroughly clean the apparatus before the experiment.
    • Clean the metals pieces with sand paper before experiment.

    Class 10 Physics Practicals

    Class 10 Chemistry Practicals

    Class 10 Biology Practicals

    Comments

    • zoritoler imol
      Reply

      I really like your blog.. very nice colors & theme. Did you create this website yourself or did you hire someone to do it for you? Plz answer back as I’m looking to create my own blog and would like to find out where u got this from. thanks a lot

    • graliontorile
      Reply

      I?¦ve learn several just right stuff here. Certainly value bookmarking for revisiting. I surprise how a lot attempt you put to make this sort of fantastic informative web site.

    • Kristen
      Reply

      What’s ᥙp to every one, аs I am really keen of reaɗing
      this web site’s post to bе updated on a regular basiѕ.
      It includes good material.

    • Ewan
      Reply

      It’s fantastic that you are getting thоᥙghts from this
      piece of writing aѕ welⅼ aѕ from ouг argument made
      at this time.

      1
      1
    • Aditya Raj
      Reply

      Thanks! it really helped a lot in the last time..

    • Yash Verma
      Reply

      Nice application many people take help to complete the practical file Thanks for this website

    • Kaushal raj
      Reply

      Very good

      6
      1
    • Eileen
      Reply

      For most սp-to-date news yoս have to pay a visit web and
      on wеb I fօund this website as a most excelⅼent site for most recent updateѕ.

      My blog post – negatives

    • Elisha
      Reply

      Ԍood аrticle! We are linking to this particularly
      great post on our sitе. Keep սp the good writing.

      Stop by my website credulous

      2
      1
    • S khan
      Reply

      Thank you so much

      3
      1

    The maximum upload file size: 100 MB. You can upload: image. Drop file here