Q.

Which of the following species acts as Bronsted base but not as acid ?

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a

CH3COOH

b

HCO3-

c

H2PO2-

d

H2PO3

answer is C.

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Detailed Solution

A base is a proton acceptor, while an acid is a proton donor, according to Bronsted Lowry's theory of acids and bases. Consequently, this idea states that  H2PO2-can readily give and absorb protons when reacting with water.

Therefore, the correct answer is option (C ) H2PO2-.

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