Skip to content
Clear highlightsClear Highlight Report a problem

Reaction of Halides with Sulfuric Acid

Sulfuric Acid

Concentrated sulfuric acid dissociates in two stages.
H2SO4 → H+ + HSO4- (strong acid)
HSO4- ⇌ H+ + SO42- (weak acid)
Concentrated sulfuric acid can act as an oxidising agent. The three possible reduction products are •sulfur dioxide: H2SO4 + 2H+ + 2e- → 2H2O + SO2• sulfur: H2SO4 + 6H+ + 6e- → 4 H2O + S•hydrogen sulfide: H2SO4 + 8H+ + 8e- → 4H2O + H2S

Read the text

Read the text and highlight anything you think is important. When you go on, the text is hidden and you answer from memory.

Next

Specification: Edexcel Chemistry (8CH0), AS-level, Topic 4B: The elements of Group 7 (halogens). Topic: Group 7.

Key terms in this lesson

oxidising agent
A substance that accepts electrons from another species, causing it to be oxidised, while it is itself reduced.

More in Group 7

All 14 lessons in Group 7 · All Edexcel AS-level Chemistry topics