Question

E. Write out and balance the following equations. 1. Calcium reacting with oxygen to form calcium oxide. 2. Hydrogen reacting with oxygen to form water. 3. Sulphur reacting with oxygen to form sulphur dioxide. 4. Calcium reacting with chlorine to form calcium chloride. 5. Sodium reacting with chlorine to form sodium chloride.​

Answer 1

Question

E. Write out and balance the following equations. 1. Calcium reacting with oxygen to form calcium oxide. 2. Hydrogen reacting with oxygen to form water. 3. Sulphur reacting with oxygen to form sulphur dioxide. 4. Calcium reacting with chlorine to form calcium chloride. 5. Sodium reacting with chlorine to form sodium chloride.​

ANSWER:

1. Ca + O₂ → 2CaO

2. 2H₂ + O₂ → 2H₂O

3. S + O₂→ SO₂

4. Ca + 2Cl → CaCl₂

5. 2Na + Cl₂ → 2NaCl

Answer 2

2Ca+O2 = 2CaO
2H2+O2=2H2O
S+O2=SO2
Ca+2Cl=CaCl2
2Na+Cl2=2NaCl