BRAINCAKESodium Bromide with Sulfuric Acid
The sulfuric acid acts as an acid and donates a proton to the halide.
Misty fumes of HBr are observed. NaBr + H2SO4 → NaHSO4 + HBr
A redox reaction also occurs:The bromide ions are strong enough reducing agents to reduce the concentrated sulfuric acid to sulfur dioxide gas.
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Key terms in this lesson
- Oxidation
- The addition of oxygen, the removal of hydrogen, the loss of electrons, or an increase in oxidation number.
- Oxidation number
- A number that represents the number of electrons an atom has lost or gained, or would do if the compound were fully ionic.
- Reducing agent
- A species that donates electrons to another species, causing that species to be reduced.
More in Group 7
- Trends in Oxidising Ability
- Displacement Reactions
- Halide Ions as Reducing Agents
- Sodium Chloride with Sulfuric Acid
- Sodium Iodide with Sulfuric Acid
- Reaction with Water
- Reaction with Alkali
- Example Question - 1
All 16 lessons in Group 7 · All AQA AS-level Chemistry topics