A sample of contains of oxygen atoms. The number of moles of ions is: — Mole Concept and Some Basic Concepts of Chemistry Chemistry Question

💡 Solution & Explanation

$1\text{ mole } Al_2(SO_4)_3$ contains $12\text{ moles}$ of O atoms and $2\text{ moles}$ of $Al^{3+}$. <br>$\text{Ratio } Al^{3+} : O = 2:12 = 1:6$. <br>$\text{Moles of } Al^{3+} = 1.5 / 6 = 0.25\text{ mol}$. [5, 6]