![]() ![]() Magnesium is very high in the reactivity series, and copper is very low – so the reaction between magnesium and copper(II) oxide is more violent. In general, the greater the difference in reactivity between two metals in a displacement reaction, the greater the amount of energy released.Īluminium is much higher than iron in the reactivity series, so the thermite reaction releases a lot of energy. Metal C displaces A but cannot displace B – so it must be more reactive than A but less reactive than B, and be in between them in this reactivity series.Metal B displaces both A and C – so it must be the most reactive and be at the top of this reactivity series.Metal A cannot displace either B or C – so it must be the least reactive and be at the bottom of this reactivity series.Reactions between metals and metal oxides allow us to put a selection of metals into a reactivity series. Reactivity involves both the thermodynamics and kinetics of the particular chemical reaction. Reactivity is set by several factors: the speed of the reaction. 1 Some substances are more reactive, and others are less reactive. ![]() The aluminium removes oxygen from the iron(III) oxide: Reactivity is a measure of how much a substance tends to react with other things. A lot of heat is needed to start the reaction (a magnesium fuse is used, which provides heat to the reactants), but then it releases an incredible amount of heat, enough to melt the iron.Īluminium + iron(III) oxide → iron + aluminium oxideĪs aluminium is more reactive than iron, it displaces iron from iron(III) oxide. It is used to produce white hot molten (liquid) iron in remote locations for welding. The thermite reaction is a good example of this. A more reactive metal will displace a less reactive metal from a compound. ![]()
0 Comments
Leave a Reply. |
AuthorWrite something about yourself. No need to be fancy, just an overview. ArchivesCategories |