Some Basic Concepts Of Chemistry Question 184
Question: What should be the equivalent weight of phosphorous acid, if P=31; O=16; H=1
Options:
A) 82
B) 41
C) 20.5
D) None of these
Show Answer
Answer:
Correct Answer: B
Solution:
The acid is dibasic. Molecular weight of $ H _3PO _3 $ $ =3+31+48=82 $
$ \therefore $ Equivalent weight $ =\frac{\text{Molecular weight}}{Basicity}=\frac{82}{2} $ = 41.
