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 $



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