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Question

1. Balance the equations. Write the name of all reactants and products.

1. S+ H2SO4→ SO2 + H2O

2. Al + Fe2O3→ Al2O3 + Fe

3. Fe + H2S04→Fe2(SO4)3 + H2

4. C2H6+ O2→CO2 + H2O

5. KOH + H3PO4→K3PO4 + K3PO4

6. SnO2+ H2→Sn + H2O

NH3+ O2→NO + H2O

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Solution

1) Sulphur + Sulphuric acid Sulphur dioxide + water
S + 2H2SO4 3SO2 + 2H2O

2) Aluminium + Iron (III) oxide Aluminium oxide + Iron
2Al + Fe2O3 Al2O3 + 2Fe

3) Iron + Sulphuric acid Iron sulphate + Hydrogen
2Fe + 3H2SO4 Fe2(SO4)3 + 3H2

4) Ethane + Oxygen Carbon dioxide + water
2C2H6 + 7O2 4CO2 + 6H2O

5) Potassium hydroxide + Phosphoric acid Potassium phosphate + water
3KOH + H3PO4 K3PO4 + 3H2O

6) Tin oxide + Hydrogen Tin + Water
SnO2 + 2H2 Sn + 2H2O

7) Ammonia + Oxygen Nitrogen oxide + water
4NH3 + 5O2 4NO + 6H2O

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