Draw the structure of the following compounds:

(i)H2S2O₇

(ii)XeOF₄

OR

Write balanced chemical equations for the following:

(i)Reaction of chlorine with hot and concentrated NaOH.

(ii) SO₂ is passed through an aqueous solution of Fe(III) salt.

(i) the structure of pyrosulphuric acid or oleum H₂S₂O₇ is -

In the above structure of H₂S₂O₇, each S atom is connected with 3 oxygen atoms(2 of them are connected with double bond and another is connected with a single bond which acts as connector in between these 2 S atoms)

(ii) XeOF₄

• The structure of XeOF4 is square pyramidal-

OR

(i)

• When chlorine gas reacts with hot and concentrated NaOH a disproportionation reaction takes place .

• In this case Cl (0) oxidises to NaClO₃ ( +5) and reduces to NaCl (-1) simultaneously.

6NaOH + Cl2 --> 5NaCl + NaClO3 + 3H2O

(ii)

• When Sulphur dioxide is passed through an aqueous solution of Fe (III) salt SO₂ acts as an reducing agent and eventually converts Fe (III) to Fe (II).

2Fe³⁺ + SO₂ + 2H₂O → 2Fe²⁺ + SO₄^2- + 4H+