Chemistry (7th Edition)

$[H_3O^+] = 4.464 \times 10^{- 8}$ - The human blood is a basic solution.
$[OH^-] * [H_3O^+] = Kw = 10^{-14}$ $2.24 \times 10^{- 7} * [H_3O^+] = 10^{-14}$ $[H_3O^+] = \frac{10^{-14}}{ 2.24 \times 10^{- 7}}$ $[H_3O^+] = 4.464 \times 10^{- 8}$ Since $[OH^-] > [H_3O^+]$, the solution is basic.