The hydroxide ion concentration is 3.71 × 10⁻⁶ of a solution that has pH of 8.57.
pH is used to measure whether the substance is acidic, basic or neutral and the range is 0 - 14.
To calculate the concentration of hydroxide ion it is expressed as:
pOH = -log[OH⁻]
First we have to find the pOH
pH + pOH = 14
8.57 + pOH = 14
pOH = 14 - 8.57
pOH = 5.43
Now put the value in above expression we get
pOH = -log [OH⁻]
5.43 = -log [OH⁻]
[OH⁻] = antilog (-5.43)
[OH⁻] = 3.71 × 10⁻⁶
Thus, from above conclusion we can say that The hydroxide ion concentration is 3.71 × 10⁻⁶ of a solution that has pH of 8.57.
Learn more about the pH here: brainly.com/question/172153
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