Destroyer Orgo #173

[rah08e]

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Consider the dissolving of ammonium phosphate, (NH4)3PO4, in water. How many moles of ions are present at high dilution?

Then answer is 4 moles of ions and I forgot how to solve this problem. Any help would be appreciated.

Thanks!

 

[rpatel8]

It would dissociate into 3 ammonium cations and 1 phosphate anion. Therefore, you would have 4 mols of ions.

 

[PooyaH]

(NH4)3PO4 in water would give you: 3 NH4 ions + 1 PO4 ion.

(NH4)3PO4 -> 3NH4+ + PO4---

 

[rah08e]

wow... thinking too hard...jesus

 

[psh3kgtplaya88]

possible mistake that they didn't incorporate water into the solution?

(nh4)3po4 + h2o ----> 3nh3 + po4 + h3o+

giving 5 moles of ions??