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Reaction Phenomenon and Reason of Sulfur Acid and Bromine Ion

2026-11-15 04:16
2026-11-15 04:40

1. ** Reaction of concentrated sulfuric acid and Bromine ions ** - ** Reaction equation **: 2Br^ - + 2H^+ + H2SO4 (concentrated) Br_2↑+SO_2↑ + 2H_2O\) - ** Reaction phenomenon **: Reddish-brown elemental sulfur dioxide will be produced in the solution, and at the same time, sulfur dioxide gas with a pungent smell will be produced. - ** Reason **: The concentrated sulfuric acid has a strong oxidisation property, and the Bromine ion has a reduction property. Under the condition of heating, the concentrated sulfuric acid oxidises the Bromine ion into Bromine, and the Bromine ion itself is reduced to Sulfur Divinity. 2. ** Heat the concentrated sulfuric acid with a concentration of about 70% with the solution of the lithium bromate ** - ** Reaction equation **:




& l - ** Reaction Phenomenon **: Gas is generated. - ** Reason **: In this reaction, the concentrated sulfuric acid is acidic, and the reaction between the concentrated sulfuric acid and the lithium bromate produces hydrogen bromate gas. 3. ** Condensed sulfuric acid with a concentration of more than 90% is heated and reacted with the solution of the acid. ** - ** Reaction equation **:<<2NaBr2>+3H2SO4>=+ Br2>+ SO2>+2H2O>(also written as <2NaBr2>+2H2SO4>=+ SO2>+2H2O>) - ** Reaction phenomenon **: Reddish-brown elemental sulfur dioxide will be produced in the solution, and at the same time, sulfur dioxide gas with a pungent smell will be produced. - ** Reason **: High concentration of concentrated sulfuric acid has a strong oxidisation. When heated, it will be oxided to a single element of Bromine, which will be reduced to sulfur dioxide. At the same time, a reaction to form bisulfuric acid (or sulfuric acid) will occur. Read more exciting novels for free

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