Explain the observation made when chlorine gas is bubbled into asolution of iron (ii) sulphate

Answer 1

Ayellow solution is formed. This is because chlorine oxidizes iron (ii) ions to iron (iii) ions there4 changing the colour of solution from pale green to yellow.

Answer 2

Sounds OK to me.

Answer 3

Except I would write it as iron(II) and iron(III)
Those should be Roman numerals.