P-Block Elements Ques 324
Question: $ H_3PO_3 $ is
[CPMT 1977, 79, 94; NCERT 1981; MP PMT 1980]
Options:
A) A tribasic acid
B) A dibasic acid
C) Neutral
D) A monobasic acid
Show Answer
Answer:
Correct Answer: B
Solution:
$ H_3PO_3 $ has three H atoms out of which only tow are attached through oxygen, and are ionisable. Third hydrogen is not ionisable because it is directly attached to phosphorous. Hence $ H_3PO_3 $ is a dibasic acid.
