Chemistry Forum

Posted: **Tue Nov 06, 2007 12:45 pm**

How many moles of ions are in a solution of 3.2 moles FeCl₃ in 500mL water?

Posted: **Wed Nov 07, 2007 10:10 am**

JamiePena wrote:How many moles of ions are in a solution of 3.2 moles FeCl₃ in 500mL water?

FeCl₃ dissociates as:

FeCl3 = Fe&#123;3+&#125; + 3Cl&#123;-&#125;

therefore there are 4 moles of ions per each mole of original compound.
The answer: 3.2*4=12.8

chemistry