Question

What happens when,-

a.An iron nail is dipped into aqueous solution of copper(ll)sulphate.

b.Litmus paper is dipped into lemon juice.

c.An iron article is kept open in moist air.

d.Electricity is passed through an acidified solution of water.

e.Solid ferrous sulphate is strongly heated.​

Answer 1

Answer:

1 A brown coating of copper is formed on the surface of iron and the color of copper sulphate

solution changes from blue to light green .

2When dipped into lemon juice it turns red in colour.

3 It gets covered with a powdery substance known as corrosion and rusting .

4It decomposes into hydrogen and oxygen gas .

5 Ferrous sulphate crystals are green in colour .It is present in hydrated form and when it is heated ,The hydrated ferrous sulphate forms anhydrous ferrous sulphate which is white in colour.

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