P-Block Elements Ques 375

Question: Which of the following compound is tribasic acid

[AIIMS 2002]

Options:

A) $ H_3PO_2 $

B) $ H_3PO_3 $

C) $ H_3PO_4 $

D) $ H_4P_2O_7 $

Show Answer

Answer:

Correct Answer: C

Solution:

$ K_2SO_4+2Na_2SO_4+\underset{\text{Chromyl chloride}}{\mathop{2CrO_2Cl_2+3H_2O}} $ it is ionizes in three steps because three -OH group are present.



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