Leaching of phosphate rock by strong ____________ acid produces phosphoric acid ?
Correct answer: C. Either A. or B.
- A. Sulphuric
- B. Hydrochloric
- C. Either A. or B.
- D. Neither A. nor B.
Explanation
Sulphuric acid is the conventional industrial leaching acid, while hydrochloric acid can also dissolve phosphate rock and yield phosphoric acid. Thus either listed acid can perform the reaction, although the sulphuric-acid route is the standard commercial process.
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