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Question

Calculate n-factor of Na3PO4 in the following reaction.

Na3PO4+3BaCl2 6NaCl+Ba3(PO4)2


A

2

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B

3

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C

4

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D

6

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Solution

The correct option is B

3


This is the type of reaction where none of the atoms involved undergo a change in their oxidation states.
A simple way to find the n-factor of Na3PO4 in such reactions would be to find the amount of cationic charge replaced per molecule.
In 2Na3PO4, we have6Na+
So, Na3PO4 has 3Na+

Na+ can be cosider to be similar to H+in H3PO4 (just an analogy)


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