Calculate the pH of a 0.500 M aqueous solution of NH₃. The K_bof NH₃is 1.77 × 10^-⁵.

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Quizplus · Accepted Answer

The pH of the solution can be calculated using the formula for the base dissociation constant (Kb) and the concentration of NH3. First, calculate the hydroxide ion concentration [OH-] using the formula: [OH-] = √(Kb × [NH3]). Then, find the pOH by taking the negative logarithm of [OH-]. Finally, convert pOH to pH using the relation: pH = 14 - pOH. This results in a pH of approximately 11.5.

Calculate the PH of a 0