A) tribasic acid
B) monobasic acid
C) tetrabasic acid
D) dibasic acid
Correct Answer: A
Solution :
The structure of orthophosphoric acid is represented as below \[OH\,\,\,\,\,\underset{\begin{smallmatrix} || \\ O \end{smallmatrix}}{\overset{\begin{smallmatrix} OH \\ | \end{smallmatrix}}{\mathop{P}}}\,\,\,\,\,OH\] This shows the presence of three\[-OH\] groups. Hence, it is a tribasic acid.
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