Question

⭕ Name the types of reactions?
⭕Write general chemical equation for combination reaction. Give it's examples.
⭕ Why does the colour of copper sulphate solution change when an iron nail is dipped in it?
⭕Give an example of a double displacement reaction.

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Answer 1

(1)types of reactions are:

1) displacement

2) double displacement

3) oxidation reaction

4) reduction reaction

5) redox reaction

4) example of double displacement reaction:

Na2SO4 (aq) + BaCl2(aq) =→ BaSO4↓+2NaCl (aq).

3) When an iron nail dipped in the copper sulphate solution than iron displaces copper from the copper sulphate because iron is more reactive than copper. Therefore the colour of the copper sulphate solution changes