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How decreasing order of acidic strength possible for :
H3PO2 > H3PO3 > H3PO4 ??
Hi mainak
if we look at the structure of those three we can easily find that basicity for
1. H3PO2 is 1
2. H3PO3 is 2 and
3. H3PO4 is 3
and since basic character is increasing hence acidic character is decreasing.....for the structures go through any inorganic chemistry book
hi
mainak
all oxoacids of phosphorous has typically two types of bonds i.e. P-H& P-OH
only P-OH is ionisable,H3PO2 has only one P-OH bond it will furnish all its hydrogen ions in a single step.
other are dibasic&tribasic which do it in steps.
hence, Ka for h3po2 is highest &hence strongest acid.
if you like my answer ,please approve it.
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