Chem: Iron and Metal Salt Solutions Essay

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Displacement reactions between metals and their salts
Introduction: Some metals are more reactive than others. In this experiment, a strip of metal is added to the solution of another metal’s salt. If the metal is more reactive than the metal whose ion is in the solution, this metal displaces the less reactive metal ion from the solution. This process is repeated with all the metals and all the metal salt solutions. Collecting this data will determine the order of reactivity of the metals.
Aim: To determine the order of reactivity of the metals.
Materials:
* 5 metals (zinc, magnesium, copper, lead, aluminium.) * 5 Metal salt solutions (Zn2+, Mg2+, Cu2+, Pb2+, Al3+) * 5 test tubes * Test tube stand * Sand paper * Lab coat * Safety glasses
Method:
1. Each metal strip was cleaned with sand paper. 2. 10-20mL of the solution of a metal compound was placed into the test tubes. 3. One strip of each metal was then placed into the test tube. 4. This was then repeated for each of the metal compounds. 5. The results were then recorded and put into a table.
Results:
Solution/Metal | Zn2+ | Mg2+ | Cu2+ | Pb2+ | Al3+ | Zinc | X | X | √ | √ | √ | Magnesium | √ | X | √ | √ | √ | Copper | X | X | X | X | X | Lead | X | X | √ | X | X | Aluminium | √ | X | X | X | X |

Safety:
Eye protection worn. Some solutions are toxic.
Discussion:
After the experiment the results were compared to the activity series chart there were a few differences between them. When adding Mg to Al3+ there was a reaction after comparing this to the chart there should have not been a reaction, also when adding Al to Cu2+ and Pb2+ the chart showed that there should have been a displacement reaction but whilst conducting
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