[bravegirl123]

does burning sulphur in oxygen form sulphur dioxide or trioxide?

[408]

Dioxide.  I wish it gave the trioxide.  That would make me so happy.

[bravegirl123]

Dioxide.  I wish it gave the trioxide.  That would make me so happy.

well than in question 12 f this paper, my answer comes A, whereas the correct answer is D. how is it D?
http://papers.xtremepapers.com/CIE/Cambridge%20International%20A%20and%20AS%20Level/Chemistry%20(9701)/9701_w05_qp_1.pdf

[maryjfoxrop]

That would make me so happy.

And how?

[DrCMS]

Dioxide.  I wish it gave the trioxide.  That would make me so happy.

well than in question 12 f this paper, my answer comes A, whereas the correct answer is D. how is it D?
http://papers.xtremepapers.com/CIE/Cambridge%20International%20A%20and%20AS%20Level/Chemistry%20(9701)/9701_w05_qp_1.pdf

How is it A?  If you work out how much oxygen is consumed per mole of material you do not get straight line.  Mg uses ½ a mole of O₂, Al uses 3/4 and S uses 2. If we make the denominator all 4 that gives 2, 3 and 8 as the y values so D gives the correct shape graph.

[bravegirl123]

Dioxide.  I wish it gave the trioxide.  That would make me so happy.

well than in question 12 f this paper, my answer comes A, whereas the correct answer is D. how is it D?
http://papers.xtremepapers.com/CIE/Cambridge%20International%20A%20and%20AS%20Level/Chemistry%20(9701)/9701_w05_qp_1.pdf

How is it A?  If you work out how much oxygen is consumed per mole of material you do not get straight line.  Mg uses ½ a mole of O₂, Al uses 3/4 and S uses 2. If we make the denominator all 4 that gives 2, 3 and 8 as the y values so D gives the correct shape graph.

But S uses only 1 mole.... and I looked into the examiner's report... it says the question was cancelled :/

[DrCMS]

Yes you are right ignore everything I said.  It should be 1/2, 3/4 and 1 which is a straight line.

[curiouscat]

That would make me so happy.

And how?

New acid plant?