Answer:
Explanation:
the answer is 8.66
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The pH of the solution formed by mixing 25. 0 ml of a 0. 15 m solution of NH₃ with 25. 0 ml of 0. 12 m HCl is 8.66.
pH is potential hydrogen. It is the measurement of the acidity and basicity of any solution.
The solution of NH₃ is 25. 0 ml of a 0. 15 m
The solution of HCl is 25. 0 ml of 0. 12 m hcl
The pkb value is [tex]1.8 \times 10^-^5[/tex]
Putting the value in the formula
[tex]pOH=pKb +log[NH_3][HCl]\\\\ pOH = 1.8 \times 10^-^5+ log \dfrac{25.0 \times 0.15}{ 25.0 \times 0.12} \\\\ pOH = 1.8\times10^-^5+ log1.25 \\\\pOH = 1.8\times 10^-^5 + 1.25 = 3.05\\\\ pH = 14 - pOH = 14 - 1.25 = 8.66[/tex]
Thus, the pH of the solution formed by mixing 25. 0 ml of a 0. 15 m solution of NH₃ with 25. 0 ml of 0. 12 m HCl is 8.66.
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