Complete Equation and Net Ionic Equation?

1. KIO3 + Na2S -->

2. BaCl2 + KIO3 -->

3. BaCl2 + Na2S -->

4. Na2SO4 + BaCl2 -->

Answer:
1. KIO3 (aq)+ Na2S (aq)>> NaIO3 (aq)+ K2S(aq)
2. BaCl2 (aq) +2 KIO3 (aq) >> Ba(IO3)2 (aq) + 2 KCl (aq)
3. BaCl2 (aq) + Na2S(aq) >> BaS(aq) + 2 NaCl (aq)
4. Na2SO4 (aq) + BaCl2(aq) >> BaSO4(s) + 2 NaCl (aq)
For the last equation we can write the net ionic equation :
SO42- (aq) + Ba2+ (aq) >> BaSO4(s)
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