Which substances are not ionized in a aqueous solution?
Hi, KBr, H2SO4, HNO2, AgCl, Ca(NO3)2
All of them are ionized, at least partially. H2SO4 and HNO2 are not ionized completely. AgCl dissolves as a solid to form a solution in equilibrium between the solid and the undissociated aqueous solution and there is a Keq for that reaction. Then the solid solution ionizes to form the Ag^+ and Cl^- so there are two equilibrium constants for this one. I would choose AgCl as the answer to this question since this is the only one with an equilibrium constant between the solid and the undissociated solution. None of the others do this.
To determine which substances are not ionized in an aqueous solution, we need to consider their chemical properties.
1. KBr (Potassium Bromide): In an aqueous solution, KBr will dissociate into potassium ions (K+) and bromide ions (Br-). Therefore, it does undergo ionization.
2. H2SO4 (Sulfuric Acid): Sulfuric acid is a strong acid. In water, it will fully ionize into hydrogen ions (H+) and sulfate ions (SO4^2-). So, it does undergo ionization.
3. HNO2 (Nitrous Acid): Nitrous acid is a weak acid. In an aqueous solution, it will partially ionize into hydrogen ions (H+) and nitrite ions (NO2-). Hence, it does undergo ionization.
4. AgCl (Silver Chloride): Silver chloride is an ionic compound that does not ionize in water. It remains in its solid form and does not dissociate into silver ions (Ag+) and chloride ions (Cl-) in solution.
5. Ca(NO3)2 (Calcium Nitrate): Calcium nitrate is a soluble ionic compound. In water, it will dissociate into calcium ions (Ca^2+) and nitrate ions (NO3-), undergoing ionization.
Therefore, out of the substances you listed, AgCl does not ionize in an aqueous solution.