What is a tribasic acid? Is BORIC ACID a tribasic acid? EXPLAIN........
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A tribasic acid is an acid that has three hydrogen ions to donate to a base in an acid-base reaction. Therefore, a tribasic molecule has three replaceable hydrogen atoms. Phosphoric acid (H 3PO 4) and citric acid are examples of tribasic acids.
Boric Acid B(OH)3 is a mono basic acid. As it can be seen from its structure that it is an oxy acid. But none of its OH produce H+. But Boron has a vacant p orbital even after bonding with 3 OH. So in water i.e. H2O a lone pair is donated to B(OH)3 and it forms a coordinate bond with H2O. Therefore a positive charge is produced on O as it donated its lone pair. But O is an electronegative element so positive charge is not stable on it. So a proton H+ is removed from it and B(OH)4 with a minus charge is formed and a H+ is produced. Thus it is a monobasic acid.
Boric Acid B(OH)3 is a mono basic acid. As it can be seen from its structure that it is an oxy acid. But none of its OH produce H+. But Boron has a vacant p orbital even after bonding with 3 OH. So in water i.e. H2O a lone pair is donated to B(OH)3 and it forms a coordinate bond with H2O. Therefore a positive charge is produced on O as it donated its lone pair. But O is an electronegative element so positive charge is not stable on it. So a proton H+ is removed from it and B(OH)4 with a minus charge is formed and a H+ is produced. Thus it is a monobasic acid.
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Explanation:
acids which on ions in water produced three hydronium Ion per molecules off the ACID are called tribasic acid
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