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.