Order these chemical species by increasing $pH$ of an $0\mathrm{.}1M$ aqueous solution of each. That is$,$ imagine making an $0\mathrm{.}1M$

solution of each species. Select $1$ next to the species that makes the solution with the lowest $pH.$ Select $2$ next to the

species that makes the solution with the next higher $pH,$ and so on$.$

Notice that some of the rankings have been filled in for you already. Also notice that water is on the list. For that particblar

case, just compare the $pH$ of pure water to the $pH$ of the other solutions.

Note for advanced students: for all charged species, you may assume the necessary counterions act as neither acids

bases.