Given below are aqueous solutions of strong electrolytes. For each solution, specify the concentration of each ion
0.15 M NH4NO3 (aq)
0.120M Mg(NO3)2(aq)
I will do the second one:
Mg++ ion .120M
NO3- ion .240M
To determine the concentration of each ion in a given solution of a strong electrolyte, we need to consider the dissociation of the compound into its constituent ions.
1. 0.15 M NH4NO3 (aq):
NH4NO3 is a strong electrolyte, which means it completely dissociates in water. It breaks down into NH4+ (ammonium) and NO3- (nitrate) ions.
Therefore, the concentration of each ion in the solution is:
- NH4+ concentration = 0.15 M
- NO3- concentration = 0.15 M
2. 0.120 M Mg(NO3)2 (aq):
Mg(NO3)2 is also a strong electrolyte that fully ionizes in water. It dissociates into Mg2+ (magnesium) and 2 NO3- (nitrate) ions.
So, the concentration of each ion in this solution is:
- Mg2+ concentration = 0.120 M
- NO3- concentration = 2 * 0.120 M = 0.240 M
By understanding the concept of strong electrolytes and their dissociation in water, we can determine the concentration of each ion present in a given solution.