P-Block Elements Ques 231

Question: Which of the following is a tetrabasic acid

[CPMT 1988]

Options:

A) Orthophosphorus acid

B) Orthophosphoric acid

C) Metaphosphoric acid

D) Pyrophosphoric acid

Show Answer

Answer:

Correct Answer: D

Solution:

$ H_4P_2O_7 $ pyrophosphoric acid $ HO-\underset{OH}{\overset{O}{\mathop{\underset{||}{\overset{||}{\mathop{P}}}}}}-O-\underset{OH}{\overset{O}{\mathop{\underset{||}{\overset{||}{\mathop{P}}}}}}-OH $ Tetrabasic ( $ 4-OH $ groups)



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