Question

Which of the following is true regarding an acidic solution?

• A. $\left[H^{+}\right]$ equals zero
• B. $\left[O{H}^{-}\right]$ equals $\left[H^{+}\right]$
• C. $\left[H^{+}\right]$ is less than $\left[O{H}^{-}\right]$
• D. $\left[H^{+}\right]$ is greater than $\left[O{H}^{-}\right]$
• E. $K_w=1\times {10}^{-7}$

Answer 1

The correct option is D $\left[H^{+}\right]$ is greater than $\left[O{H}^{-}\right]$

If the pH of a solution is less than $7$, the solution is called acidic; if the pH is about $7$, the solution is neutral; if the pH is greater than $7$, the solution is is called basic. In an acidic solution, then, the concentration of hydrogen ions is greater than the concentration of hydroxide ions.In a neutral solution, the concentrations of hydrogen ions and hydroxide ions are roughly equal. In a basic solution, the concentration of hydroxide ions is greater than the concentration of hydrogen ions.

The ionic product of water $K_w=1\times {10}^{-14}$