[kemensindia]

What is the reaction when Ferric chloride reacts with sulphur dioxide in aqueous solution?
Does the sulphur dioxide first react with water to form sulphurous acid which in turn reacts with ferric chloride?

[Dan]

Besides being acidic, what kind of a reagent is aqueous SO₂? How might it interact with Fe(III)?

Hint

[kemensindia]

Besides being acidic, what kind of a reagent is aqueous SO₂? How might it interact with Fe(III)?

Hint

I mean what would be the reaction if sulphur dioxide is bubbled through aqueous ferric chloride solution?


Mod edit: Quote tags corrected.

[Dan]

I mean what would be the reaction if sulphur dioxide is bubbled through aqueous ferric chloride solution?

Same thing, SO₂ dissolves in water. I am trying to help you, but we do not just dump answers here.

Other than an acid, what kind of a reagent is SO₂(aq) (sulfurous acid)?

[kemensindia]

I mean what would be the reaction if sulphur dioxide is bubbled through aqueous ferric chloride solution?

Same thing, SO₂ dissolves in water. I am trying to help you, but we do not just dump answers here.

Other than an acid, what kind of a reagent is SO₂(aq) (sulfurous acid)?

My knowledge may be very limited. I think sulphurous acid is a bleaching agent which bleaches by reductions. Hence, perhaps would reduce ferric chloride. Is that right?


Mod edit: Quote tags corrected

[Dan]

Hence, perhaps would reduce ferric chloride. Is that right?

Yes, sulfurous acid is a reducing agent - so how do you think it will interact with iron(III)?

[kemensindia]

Besides being acidic, what kind of a reagent is aqueous SO₂? How might it interact with Fe(III)?

Hint

Hence, perhaps would reduce ferric chloride. Is that right?

Yes, sulfurous acid is a reducing agent - so how do you think it will interact with iron(III)?

Then in that case it would reduce to the Fe(III) to Fe(II) and itself get oxidised to sulphuric acid. So the reactants would be finally ferric chloride and sulphurous acid and the products ferrous chloride, hydrochloric acid and sulphuric acid. It this is correct I am unable to balance the reaction, making me thing the products may be something different. Is that so?

Mod Edit: Quote tags corrected again. Please type your reply after the quote tags - I have had to correct all of your replies so far. Dan.

[Dan]

Then in that case it would reduce to the Fe(III) to Fe(II) and itself get oxidised to sulphuric acid. So the reactants would be finally ferric chloride and sulphurous acid and the products ferrous chloride, hydrochloric acid and sulphuric acid. It this is correct I am unable to balance the reaction, making me thing the products may be something different. Is that so?

That's right. You are probably stuck on the balancing because you need water on the left hand side, try balancing this:

FeCl₃ + SO₂ + H₂O  FeCl₂ + HCl + H₂SO₄


P.S. Please type your reply after the quote tags - I have had to correct all of your replies so far.

[kemensindia]

Then in that case it would reduce to the Fe(III) to Fe(II) and itself get oxidised to sulphuric acid. So the reactants would be finally ferric chloride and sulphurous acid and the products ferrous chloride, hydrochloric acid and sulphuric acid. It this is correct I am unable to balance the reaction, making me thing the products may be something different. Is that so?

That's right. You are probably stuck on the balancing because you need water on the left hand side, try balancing this:

Thanks a lot got it!
I am terribly sorry for the incorrect way of posting. This is my first instance of communication with a forum or even a chat. Sorry for the inconvenience caused and thanks once again.

FeCl₃ + SO₂ + H₂O  FeCl₂ + HCl + H₂SO₄


P.S. Please type your reply after the quote tags - I have had to correct all of your replies so far.

Thanks a lot.