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What is the final pH at 25°C when 56 mL of 0.139 mol/L NaOH(aq) and 30...

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Chemistry

What is the final pH at 25°C when 56 mL of 0.139 mol/L NaOH(aq)and 30 mL of 0.187 mol/L HA(aq) are mixed. Assume that HA is a weakmonoprotic acid with pKa = 4.99 at 25°C

Answer & Explanation Solved by verified expert
3.8 Ratings (534 Votes)
Let us write down the acidbase reaction between the monoprotic acid and NaOH as HA aq OH aq A aq H2O Now we calculate the moles of HA and NaOH available to us Amount of NaOH added 56 mL 1000 mL1 L0139    See Answer
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