Reactivity series of metals|Reaction with hydrochloric acid and sulphuric acid (Mg, Zn. Al, Fe, Pb, Cu)

Reactivity series of metals|Reaction with hydrochloric acid and sulphuric acid (Mg, Zn. Al, Fe, Pb, Cu)

Aim / Objective: 

To investigate the reaction of some metals: Mg, Zn. Al, Fe, Pb, Cu, with hydrochloric acid and sulphuric acid.

Apparatus/ Materials:

metals of magnesium (Mg) turnings, zinc (Zn) granules, aluminum (Al) turnings, iron (Fe) filings, lead (Pb) foil, copper (Cu), 6 test-tubes, test-tube rack, dilute hydrochloric acid (HCl), dilute sulphuric acid (H2SO4), splints, Bunsen burner and spatula.

Method / Procedure:

  1. Half fill a test- tube with dilute HCl.
  2. Add a spatula full of magnesium turnings to the acid, place cork stopper in the mouth of test-tube and observe for effervescence of gas.
  3. Record your observations. Heat gently under the Bunsen burner if no reaction is taking place or if it is too slow.
  4. Remove cork-stopper and place a lighted splint at the mouth of test-tube. Note the reaction.
  5. Repeat steps 1-4 with the remaining metals and dilute HCl. Then repeat the same procedure with dilute sulphric acid.
  6. Tabulate your results.

Suggested Results: 

reactivity table 1 reactivity table 2

 

Discussion:

reactivity series equations

reactivity series results

 

 

 

 

Source of Error/ Limitations/ Assumptions:  

  • Overheating of test-tube.
  • Allowing some gas to escape when HCl and H2SO4 is added

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