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Question
which one of the following will displace copper from a solution of copper sulphate? a- al b- Fe c-Mg d- all of these e- non of these
which one of the following will displace copper from a solution of copper sulphate? a- al b- Fe c-Mg d- all of these e- non of these
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Solution
In general, any metal higher than copper in the "electromotive series" will displace copper from copper sulfate solution. This category includes all the alkali and alkaline earth metals and other common metals such as iron and zinc.
So, all of these metal will displace copper from copper sulphate solution because all three are more reactive metals then copper.
3CuSO4(aq) + 2Al(s) ==> Al2(SO4)3(aq) + 3Cu2+(s)
CuSO4(aq) + Fe(s) ==> FeSO4(aq) + Cu2+(s)
CuSO4(aq) + Mg(s) ==> MgSO4(aq) + Cu2+(s)
In general, any metal higher than copper in the "electromotive series" will displace copper from copper sulfate solution. This category includes all the alkali and alkaline earth metals and other common metals such as iron and zinc.
So, all of these metal will displace copper from copper sulphate solution because all three are more reactive metals then copper.
3CuSO4(aq) + 2Al(s) ==> Al2(SO4)3(aq) + 3Cu2+(s)
CuSO4(aq) + Fe(s) ==> FeSO4(aq) + Cu2+(s)
CuSO4(aq) + Mg(s) ==> MgSO4(aq) + Cu2+(s)
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