Fill in the Blanks

1. Two antioxidants which are usually added to fat and oil containing foods to prevent rancidity, are …………., …………. .

2. …………. is the process in which metals are eaten up gradually by the action of air, moisture or a chemical on their surface.

3. 2 FeSO₄ → Fe₂O₃ + SO₂ + ………….

4. Na₂SO₄ + BaCl₂ → …………. + 2NaCl

5. Complete the missing components/variables given as x and y in the following reactions:

(a) Pb (NO₃)₂ (aq) + 2KI (aq) → Pbl₂ (x) + 2KNO₃ (y)

(b) Cu (s) + 2AgNO₃ (aq) → Cu (NO₃)₂ (aq) + x (s)