Question

[H+] = 2.5 x 10-3M find the pH and pOH

Answer 1

Answer:

pH = 2.6

pOH = 11.4

Explanations:

The formula for calculating the pH of a solution is given as;

$pH=-log[H^+]$

Given the following parameter

$[H^+]=2.5\times10^{-3}$

Substitute the given parameter into the formula

$\begin{gathered} pH=-log(2.5\times10^{-3}) \\ pH=-log(0.0025) \\ pH=-(-2.6) \\ pH=2.6 \end{gathered}$

Determine the pOH of the solution

$\begin{gathered} pH+pOH=14 \\ pOH=14-pH \\ pOH=14-2.6 \\ pOH=11.4 \end{gathered}$

Therefore the pH and pOH of the solutionare 2.6 and 11.4 respectively