Indicate the type of reaction taking place:
1) NaBr + H3PO4 Na3PO4 + HBr
Reaction type:____________________________________
2) Ca(OH)2 + Al2(SO4)3 CaSO4 + Al(OH)3
Reaction type:____________________________________
3) Mg + Fe2O3 Fe + MgO
Reaction type:____________________________________
4) C2H4 + O2 CO2 + H2O
Reaction type:____________________________________
Identify the reaction type and try to balance chemical equations below.
SHOW WORK
1. ____ Na +____ I2  ____ NaI
2. ____ KClO3  ____ KCl + ____ O2
3. ____ K3PO4 + ____ HCl  ____ KCl + ____ H3PO4