The gas that is liberated when iron is heated with concentrated tetraoxosulphate (VI)acid is

JAMB Chemistry 2024 198 views
Source: JAMB · 2024

The gas that is liberated when iron is heated with concentrated tetraoxosulphate (VI)acid is

  1. H₂S
  2. SO₂ ✓
  3. HCI
  4. SO₃
Explanation

Hot concentrated sulphuric acid is an oxidising agent. It oxidises iron and is itself reduced to SO₂, sulphur dioxide.

Dilute acid would give hydrogen instead. HCl contains no sulphur, so it cannot form.

Was this explanation helpful?

Something wrong or missing? Tell us — we read every report and fix issues fast.

pastQuestions.ng pastquestions.ng