1. Calculate The PH Value Of A Solution In Which [OH- ] = 1.49 × 10−8M

1. Calculate the pH value of a solution in which [OH- ] = 1.49 × 10−8M

SOLUTION:

Step 1: Calculate the pOH.

[tex]\begin{aligned} \text{pOH} & = -\text{log} \: [\text{OH}^-] \\ & = -\text{log} \: (1.49 \times 10^{-8}) \\ & = 7.827 \end{aligned}[/tex]

Step 2: Calculate the pH.

[tex]\begin{aligned} \text{pH} & = 14 – \text{pOH} \\ & = 14 – 7.827 \\ & = \boxed{6.173} \end{aligned}[/tex]

Hence, the pH value of a solution is 6.173.

[tex]\\[/tex]

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