What happens in the reaction between SO2 and H2O?

👨🏻‍🏫 學術台化學

[匿名]

2010-09-27 7:46 am

I found 2 equations for the reaction between SO2 (Sulfur dioxide) and H2O which are:
2SO2 + 2H2O -> 2H2S2 + 3O2
SO2 + H2O -> H2SO3

In the experiment, I had Sulfur in the test tube and wet litmus papers on the end of the test tube, and let S react with O2 by heating the test tube with Bunsen burner so that SO2 can reach the litmus papers and react with H2O. To me, it seems that the second equation represents my experiment, but it's just what I feel like.

更新1:

Also, is Na2O2 + 2H2O -> 2NaOH + H2O2 a correct equation for the reaction between Sodium peroxide and water?

回答 (2)

Trevor H

2010-09-27 8:56 am

✔ 最佳答案

The accepted equation for the reaction between SO2 and H2O is:
SO2 + H2O → H2SO3 - At least that is the only equation that I have ever seen. I can find no reference to the other reaction, and only 1 obscure reference to H2S2, hydrogen disulphide. It musr be formed only under exceptional and very specific conditions. In the experiment described by you, you can be very sure that the second reaction has occurred.

Your second equation is correct- This is what happens in industy when Na2O2 is used as an oxidising bleaching agent. H2O2 is formed in NaOH solution.

👍 5 👎 2

[匿名]

2016-10-13 10:25 am

So2 H2o

參考: https://shorte.im/a8pqM

👍 0 👎 0

[匿名]

2015-08-06 10:47 am

This Site Might Help You.

RE:
What happens in the reaction between SO2 and H2O?
I found 2 equations for the reaction between SO2 (Sulfur dioxide) and H2O which are:
2SO2 + 2H2O -> 2H2S2 + 3O2
SO2 + H2O -> H2SO3

In the experiment, I had Sulfur in the test tube and wet litmus papers on the end of the test tube, and let S react with O2 by heating the test tube with...

參考: reaction so2 h2o: https://tr.im/z1HN8

👍 0 👎 0

[匿名]

2014-04-30 7:37 am

H2SO3

👍 0 👎 1

收錄日期: 2021-04-30 01:11:00
原文連結 [永久失效]:
https://hk.answers.yahoo.com/question/index?qid=20100926234624AAoKAAa

檢視 Wayback Machine 備份