A) 82
B) 41
C) 20.5
D) None of these
Correct Answer: B
Solution :
The acid is dibasic. Molecular weight of \[{{H}_{3}}P{{O}_{3}}\]\[=3+31+48=82\] \[\therefore \] Equivalent weight \[=\frac{\text{Molecular weight}}{\text{Basicity}}=\frac{82}{2}\]= 41.
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