P2O5 percentage in the phosphoric acid produced by wet process is about_________________?
Correct answer: B. 30
- A. 10
- B. 30
- C. 50
- D. 70
Explanation
Wet-process phosphoric acid commonly contains about 28 to 32% P2O5, so 30% is the suitable approximate value. Higher values such as 50 or 70% generally require subsequent concentration.
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