how to find the no.of moles in a particular ionic compound,for ex:KCl is 2,K3PO4 is 4 ,how?

Asked by sitaramsuraj8 | 16th Feb, 2014, 03:03: PM

Expert Answer:

First determine what ions you have and how many of each. 

In the given example,

For KCl, answer is 2.

Explanation

you have K+ potassium ions and Cl- chloride ions. 
Now how many are there?

There are 1 K+ ions and 1 Cl- ion for a total of 2 ions in the formula. Therefore the answer is 2.

Similarly,

For K3PO4, anser is4.

Explanation

you have K+ potassium ions and PO4- phosphate ions. 

Now how many are there?

There are 3 K+ ions and 1 PO4- ions for a total of 4 ions in the formula. Therefore the answer is 4.

Answered by  | 17th Feb, 2014, 12:39: PM

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