Some Basic Concepts Of Chemistry Question 246
Question: $ Ca{{(OH)}_2}+H _3PO _4\to CaHPO _4+2H _2O $ the equivalent weight of $ H _3PO _4 $ in the above reaction is [Pb. PMT 2004]
Options:
A) 21
B) 27
C) 38
D) 49
Show Answer
Answer:
Correct Answer: D
Solution:
The equivalent weight of $ H _3PO _4=\frac{\text{molecular weight}}{2} $
$ \because $ mole wt of $ H _3PO _4 $ = 3 + 31 + 64 = 98 \ $ \frac{98}{2}=49 $
