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What is the basicity of H3PO4?...

What is the basicity of `H_3PO_4`?

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A molecule of `H_3PO_4` contains 3 P-OH bonds or groups which are ionisable. So basicity of `H_3PO_4` is 3 .
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Knowledge Check

  • What is the normality of a '1 M' solution of 'H_3 PO_4 ?'

    A
    '0.5 ~N'
    B
    1 N'
    C
    '2.0 ~N'
    D
    '3.0 ~N'
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    Both phosphoric and phosphorus acid contains equal number of hydrogen atoms. But H_3PO_3 is dibasic and H_3PO_4 Is tribasic. Give reason.