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.
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:
- Half fill a test- tube with dilute HCl.
- 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.
- Record your observations. Heat gently under the Bunsen burner if no reaction is taking place or if it is too slow.
- Remove cork-stopper and place a lighted splint at the mouth of test-tube. Note the reaction.
- Repeat steps 1-4 with the remaining metals and dilute HCl. Then repeat the same procedure with dilute sulphric acid.
- Tabulate your results.
Source of Error/ Limitations/ Assumptions:
- Overheating of test-tube.
- Allowing some gas to escape when HCl and H2SO4 is added