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Author Question: What is the approximate pH at the equivalence point of a weak acid-strong base titration if 25 mL of ... (Read 116 times)

clmills979

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on: Nov 18, 2019

Question 1

What is the approximate pH at the equivalence point of a weak acid-strong base titration if 25 mL of aqueous formic acid (HCOOH) requires 29.80 mL of 0.3567 mol L-1 NaOH? Ka =1.8 × 10-4 for formic acid.
◦ 5.48
◦ 8.52
◦ 11.94
◦ 2.06

Question 2

What is the approximate pH at the equivalence point of a weak acid-strong base titration if 25 mL of aqueous hydrofluoric acid requires 30.00 mL of 0.400 mol L-1 NaOH? Ka = 6.76 × 10-4 for HF.
◦ 5.75
◦ 1.74
◦ 12.26
◦ 8.25
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Marked as best answer by clmills979 on Nov 18, 2019

isabelt_18

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Reply #1 on: Nov 18, 2019
Lorsum iprem. Lorsus sur ipci. Lorsem sur iprem. Lorsum sur ipdi, lorsem sur ipci. Lorsum sur iprium, valum sur ipci et, vala sur ipci. Lorsem sur ipci, lorsa sur iprem. Valus sur ipdi. Lorsus sur iprium nunc, valem sur iprium. Valem sur ipdi. Lorsa sur iprium. Lorsum sur iprium. Valem sur ipdi. Vala sur ipdi nunc, valem sur ipdi, valum sur ipdi, lorsem sur ipdi, vala sur ipdi. Valem sur iprem nunc, lorsa sur iprium. Valum sur ipdi et, lorsus sur ipci. Valem sur iprem. Valem sur ipci. Lorsa sur iprium. Lorsem sur ipci, valus sur iprem. Lorsem sur iprem nunc, valus sur iprium.
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clmills979

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Reply 2 on: Nov 18, 2019
Excellent

rachel

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Reply 3 on: Yesterday
YES! Correct, THANKS for helping me on my review

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