Sorry that is Incorrect
The correct answer is: Alkali are able to dissolve in water and bases are not. The other answer choices are incorrect. Here is why:
- Bases are able to dissolve in water and alkali are not.--> This is the correct idea but opposite as bases are not able to dissolve in water while alkali are.
- Alkali must contain 2 or more OH- ions and bases only have 1.--> This is completely incorrect because alkali do not depend on the number of OH- ions the solution contains, only the strength of the base is dependent on the number of OH- ions.
- Alkali are able to dissolve in water and bases are not.--> This is correct!
- Bases must contain 2 or more OH- ions and alkali only have 1. --> This is completely incorrect because alkali do not depend on the number of OH- ions the solution contains, only the strength of the base is dependent on the number of OH- ions.