pBlock ElementsII - Result Question 112

####109. Explain, “orthophosphoric acid, H3PO4 is tribasic but phosphorous acid, H3PO3 is dibasic”.

(1982,1M)

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Solution:

  1. Orthophosphoric acid (H3PO4) has three replaceable (acidic) hydrogen while orthophosphorus acid (H3PO3) has only two replaceable hydrogen.

orthophosphoric acid (it has three acidic H )



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