Question

“Write a disassociation equation for each of the following”

(Also please write an explanation on how you did it)

Answer 1

The dissociation equation for MgCl2 in water is MgCl2 arrow Mg2+ + 2Cl-.

Looking at the formula Al(NO3)3, we notice that for one Al ion, there are three NO3 ions. Therefore when aluminum nitrate dissociates in water, it produces one aluminum ion and three nitrate ions per each formula unit.

Al(NO3)3 (aq) + 3 H2O (l) → 3 HNO3 (aq) + Al(OH)3 (s)

2HNO3⇌NO2++NO3−+H2O.