Heating of ortho-phosphoric acid to about 900°C, produces_________________?
Correct answer: A. Meta-phosphoric acid
- A. Meta-phosphoric acid
- B. Pyrophosphoric acid
- C. No change in it
- D. None of these
Explanation
On strong heating, orthophosphoric acid loses water and ultimately forms metaphosphoric acid. Pyrophosphoric acid is the intermediate dehydration product formed at lower temperatures.
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