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Which of the following compound is a tribasic acid? (a) H3PO2 (b) H3PO4 (c) H3PO3 (d) H4P2O7

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Which of the following compound is a tribasic acid? 

(a) H3PO2 

(b) H3PO4

(c) H3PO3 

(d) H4P2O7

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1 Answer

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Best answer

The correct option is (b) H3PO4.

Explanation:

H3PO4 is a tetrahedral structure molecule. It contains three -OH groups so that three protons can be released. So, it acts as a tribasic acid.

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