Physical Chemistry> STOICHIOMETRY...

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

SINGH SINGH , 14 Years ago

Grade

4 Answers

AKASH GOYAL AskiitiansExpert-IITD

Last Activity: 14 Years ago

Dear Singh

Basicity of H3PO4 is 3 while that of H3PO2 is 1 because in H₃PO₂one 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.

All the best.

AKASH GOYAL

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VIBHOR GAUR

Last Activity: 14 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.

VIBHOR GAUR

Last Activity: 14 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..

Kushagra Madhukar

Last Activity: 4 Years ago

Dear student,

Please find the answer to your question.

I there is some mistake in the question.

Note that Basicity of H3PO4 is 3 while that of H3PO2 is 1 because in H₃PO₂one 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.

Thanks and regards,
Kushagra