The pOH of the solution will be 12.1. The pH value always lies between 0 and 14. The pOH value is obtained by subtracting the pH value by 1.
The concentration of the hydroxide ion (OH)⁻in a solution is measured by pOH.It is a negative logarithm of the hydroxide ion.
pOH = 14 – pH.
The given concentration of pH = 1.90
The pOH of the solution is found as;
pOH = 14 – pH
pOH = 14 – 1.90
pOH = 12.1
Hence the pOH of the solution will be 12.1.
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