Question

Write the complete equation and net ionic equation for the following:

Al(s)+Fe(NO₃)₃-------------->

Al(s)+Cu(NO₃)2-------------->

Al(s)+Zn(NO₃)2-------------->

Al(s)+ZnCl4-------------->

Answer 1

aluminium is the most reacitve of all, therefore expect reactions:

Al(s) --> Al3+ + 3e-

then

complete :

Al(s)+Fe(NO3)3-------------->Fe(s)+Al(NO3)3

2Al(s)+3Cu(NO3)2-------------->3Cu(s)+2Al(NO3)3

2Al(s)+3Zn(NO3)2-------------->2Zn(s)+2Al(NO3)3

4Al(s)+3ZnCl4-------------->3Zn(s)+ 4AlCl3

now, balance net ionic:

Al(s) + Fe+3(aq) --> Al+3(aq) + Fe(s)

2Al(s) + 3Cu2+(aq) = 3Cu(s) + 2Al3+(aq)

2Al(s) + 3Zn+2(aq) = 3Zn(s) + 2Al3+(aq)

3Zn+4(aq) + 4Al(s) = 3Zn(s) + 4Al+3(aq)