Edexcel IAL Chemistry AS 8.15 Group 2 hydroxide and sulfate solubility
Edexcel IAL Chemistry AS 8.15 Group 2 hydroxide and sulfate solubility
Remember hydroxide solubility increases while sulfate solubility decreases down the group, then use that direction to predict a precipitate or titre.
How this is tested
- State that hydroxide solubility increases while sulfate solubility decreases down Group 2.
- Use sulfate precipitate formation to distinguish a Group 2 ion from a soluble alternative.
- Interpret saturated-hydroxide titration data through the change in solubility down the group.