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H3PO2 and H3PO3: How to tell which is which....

Started by Giver_Hell, June 13, 2004, 02:25:00 AM

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Giver_Hell

June 13, 2004, 02:25:00 AM
How can one tell the difference between H3PO2 and H3PO3 if both where dilluited with water? Doesn't H3PO2 react with I2 at room temperature?

WizardX

Yes
#1
June 13, 2004, 03:46:00 AM
Yes, but the reaction is not fast due to the I2 solubility in solution. Give it sometime.

H3PO2 is oxidised with hot sulphuric acid forming sulphur.
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