_____________ chloride present in crude petroleum as impurity is the most prolific producer of HCl during distillation?

Correct answer: A. Magnesium

  • A. Magnesium
  • B. Potassium
  • C. Calcium
  • D. Sodium

Explanation

Magnesium chloride hydrolyses during crude-oil distillation to form hydrochloric acid, making it a major source of corrosive HCl. Sodium and potassium chlorides are much more thermally stable under these conditions.

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