Chemistry

Problem

Four solutions are listed below. I.

pOH = 3.0

II.

[H_3O^+] = 1.0 \times 10^{-5}\,\text{M}

III.

pH = 9.5

IV.

[OH^-] = 1.0 \times 10^{-2}\,\text{M}

Which sequence ranks the solutions from most acidic to most basic? a)

\mathrm{I < II < III < IV}

\mathrm{II < III < I < IV}

\mathrm{IV < II < III < I}

\mathrm{IV < I < III < II}