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Answer:
1) 1 Ca(s) + 2 Na1Cl1(aq) --> 2 Na(s) + 1 Ca1Cl2(aq)
1 Ca(s) + 2 Na1+ --> 2 Na(s) + 1 Ca2+
2) 1 Al2(SO3)3(aq) + 3 Ca1(C2H3O2)2(aq) --> 2 Al1(C2H3O2)3(aq) + 3 Ca1(SO3)1(s)
1 SO32- + 1 Ca2+ --> 1 Ca1(SO3)1(s)