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metals and their reactivity & redox reactivity (the reactivity series…
metals and their reactivity & redox reactivity
the reactivity series how well a metal reacts
2) for metals their reactivity is determined by how easily they lose electrons forming positive ions the higher up the reactivity series a metal is the more easily it will form positive ions
3) when metals react with water or acid they lose electrons and form positive ions so the higher a metal is in the reactivity series the more easily it reacts with water or acid
1) the reactivity series lists metals in order of their reactivity towards other substances
4) if you compare the relative reactivity of different metals with either an acid or water and put them in order from the most reactive to the last reactive the order you get is the reactivity series
how metals react with acids tells you about their reactivity
1) the speed of reaction is indicated by the rate at which the bubbles of hydrogen are given off
2) the more reactive the metal the faster the reaction will go very reactive metals like potassium sodium lithium and calcium react explosively but less reactive mental such as magnesium zinc and iron react less violently in general copper wont react with cold dilute acid
acid + metal ---> slat+ hydrogen
some examples of redox reactions
metals reacting with acids
4)the hydrogen u=ions gain electrons to become hydrogen atoms they are reduced by the iron atoms
3) the iron atoms lose electrons to become iron ions they are oxidised by the hydrogen ions
2) for example the reaction of iron with dilute sulphuric acid is a redox reaction
1) all reaction of metals with acids are redox reactions
5) the ionic equations for the redox reaction is : Fe + 2H+ ---> Fe2+ + H2
halogen displacement reaction
1) a more reactive halogen can displace a less reactive halogen from a salt solution
2) for example chlorine can displace bromine from potassium bromide solution
3)the chlorine atoms gain electrons to become chlorine ions they are reduced by the bromide ions
4) the bromide ions lose electrons to become bromine atoms they are oxidised by the chlorine atoms
5)the ionic equation for this redox reaction is CL2 + 2Br- ---> 2CL- +Br2