Question

Please solve this question ​

Answer 1

Answer:

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Explanation:

7a)When an iron nail is dipped in copper sulphate solution, a brown coating of copper is formed on the surface of iron and the color of the copper sulphate solution changes from blue to pale green. The reaction shows that iron is more reactive than copper because it displaces copper from the copper sulphate solution.

Fe + CuSO₄    →      FeSO₄ + Cu

7b)Sulphur dioxide can dissolve in water to form Sulfurous acid(H2SO3). Sulphur dioxide (SO2) dissolves in Water (H2O) and make Sulphurous acid (H2SO3)

7c)1.2Cu+H2O+CO2+O2=Cu(OH)2+CuCO3.

7c)2.O2 + S → SO2