When water is added to anhydrous iron(III) chloride, $\text{FeCl}_3$, hydrated iron(III) chloride, $\text{FeCl}_3\cdot6\text{H}_2\text{O}$, is produced and energy is released. $\text{FeCl}_3 + 6\text{H}_2\text{O} \rightleftharpoons \text{FeCl}_3\cdot6\text{H}_2\text{O}$ Which reaction pathway diagram shows the reverse reaction, in which anhydrous iron(III) chloride is formed?
Chemistry 0620 · IGCSE · Exothermic and endothermic reactions