Chem Essay (metals reaction)

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To compare the reactivity of Zn, Fe, Ag and Mg, we can make use of thedisplacement reaction .

First, put the zinc granule, silver pieces, iron nails, magnessium ribbions into testtube with silver nitrate solution respectively. After puting metals into silver nitrate solution respectively, some silver crystals can be observed on the surface of metals. This show that Zinc , magnesium, iron is more reactive than silver because matel in higher reactivity series is more reactive, so its atom lose electrons more readily to form cation . The cation of the less reactive metal would accept these and thus forming back the atoms of the less reactive metal . Therewfore, silver crystals are form on the surface of the more reactive metal than silver.


After that, you should put iron nails and and magnesium ribbon into sinc silphate solution. No crystal can be observed on the surface of iron nail. This show that iron is less reactive than zinc. On the other hand, some crystal form on the surface of magnesium and the solution turn to very pale pink. The show that magnesium is more reactive than zinc.

To conclude, magnesium is the most reactive among the four metals and silver is the least reactive while zinc is more reactive than iron