Question

3. Identify the type of reactions and balance them:
Na2SO4 + BaCl2 BaSO4 + NaCl
Pb(NO3)2
→ PbO + NO2 + O2
Fe +02
→ Fe, o3
​

Answer 1

1) BaCl2 + Na2SO4 → BaSO4 + 2 NaCl

• It is a double displacement reaction .

2) 2 Pb(NO3)2 → 2 PbO + 4 NO2 + O2

• It is a Thermal decomposition reaction .

3) 4 Fe + 3 O2 → 2 Fe2O3 .

• It is a chemical reaction or redox reaction .

Hope it's helpful to you.

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