Solubility Concept Test
Consider a beaker containing 100ml of water, with solid AgCl on the bottom. If NaCl is added to the solution... (choose which two are true)
- The amount of AgCl solid at the bottom of the beaker increases.
- The amount of AgCl solid at the bottom of the beaker decreases.
- The concentration of [Ag+] in the solution stays the same
- The concentration of [Ag+] in the solution changes
The enamel covering of your teeth contains the mineral hydroxyapatite, Ca10(PO4)6(OH)2 which dissolves in water to give: Ca10(PO4)6(OH)2 (s) <---> 0Ca+2 + 6PO4-3 + 2OH- Is hydroxyapatite more soluble in
- acidic solution
- neutral water
- basic solution
A buffer is prepared by adding 50.0ml of 0.15M HNO3 to 100ml of 0.12M NaHCOO (Sodium Formate). In this solution, will the ratio of [HCOO-]/ [HCOOH] be greater than, less than or equal to [F-]/[HF].
- [HCOO-]/ [HCOOH] > [F-]/[HF]
- [HCOO-]/ [HCOOH] = [F-]/[HF]
- [HCOO-]/ [HCOOH] < [F-]/[HF]
- We can't tell until we explicitly calculate the pH of the solution