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CHEMISTRY

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Hi!! pls i need help!
1) Mg + Al2(So4)3
2)Fe + CuSO4
3)Mg + CuSO4
4)Zn + CuSO4
5)Mg + FeSO4

FOR ALL 5:

a)balanced eq
b)ionic equation
c) net ionic

  • CHEMISTRY -

    I will do the first one in detail. The others follow the same pattern.
    Look up the activity series in your text/notes/Google/etc.
    If the METAL is above the metal ION, the metal will displace it; otherwise, there is no reaction.
    3Mg + Al2(SO4)3 --> 3MgSO4 + 2Al
    Mg is ABOVE Al in the activity series; therefore, the ion is displaced. These are single replacement type reactions. Then I balanced the equation.

    Turn the balanced equation into an total ionic equation. I will write (aq), (s), (l) after each to show it is a solid, aqueous, pure material (that's l).
    3Mg(s) + 2Al^3+(aq) + 3SO4^2-(aq) ==> 3Mg^+2(aq) + 3SO4^2-(aq) + 2Al(s)

    The net ionic equation is obtained by canceling anything that appears on both sides of the equation. Here the SO4^2-(aq) appears on both sides so the net ionic equation is
    3Mg(s) + 2Al^3+(aq) ==> 3Mg^2+(aq) + 2Al(s)

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