why boric acid is very weak monobasic acid
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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.
Hope this helps you...
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.
Hope this helps you...
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this is because notice acid does not act as proton donor rather it accepts a lone pair of electrons from OH- ions thereby acting as a monobasic acid
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