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why is the basicity of  H3PO4 is 1????? according to the H+ ions it shoould have been 3 !!!!!!!

6 years ago


Answers : (3)


Dear Singh

Basicity of H3PO4 is 3 while that of H3PO2 is 1 because in H3POone H be released due to the presence of one O-H bond where as  H3PO4 will release 3H due to the presence of 3 O-H bonds.

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6 years ago

 basicity is not the total no. of hydrogens present in an acid.

it is the no of hydronium ions that an acid is capable of releasing easily into a solution. H3PO4 is a weak acid and dissociates into H2PO4 (-) + H(+). further dissociation doesnt take place.

hence H3PO4 is a monobasic acid in general.

6 years ago

Basicity of H3PO4 is 3.. As all the three h+ ions r available for donation. But basicity of H3PO3 Is 2 nd basicity of H3PO2 IS 1.. Only those H+ ions r available for donation which r attached to electronegative atom.. See their structure then u can easily understand..

6 years ago

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