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Author Question: A weak acid, HF, is in solution with dissolved sodium fluoride, NaF. If HCl is added, which ion will ... (Read 51 times)

krzymel

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on: Mar 21, 2021

Question 1

A titration of 200.0 mL of 1.05 M H2A was done with 1.00 M NaOH. For the diprotic acid H2A, Ka1 = 2.5 × 10–5, Ka2 = 3.1 × 10–9. Calculate the pH before any 1.00 M NaOH has been added.

◦ 11.71
◦ 4.58
◦ 9.42
◦ 9.16
◦ 2.29

Question 2

A weak acid, HF, is in solution with dissolved sodium fluoride, NaF. If HCl is added, which ion will react with the extra hydrogen ions from the HCl to keep the pH from changing?

◦ OH–
◦ Na+
◦ F–
◦ Na–
◦ None of these are correct.
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Marked as best answer by krzymel on Mar 21, 2021

wtf444

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Reply #1 on: Mar 21, 2021
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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krzymel

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Reply 2 on: Mar 21, 2021
Excellent

bbburns21

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Reply 3 on: Yesterday
Gracias!

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