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Author Question: You have 100.0 mL of 0.100 M aqueous solutions of each of the following acids: HCN, HF, HCl, and ... (Read 44 times)

bobbie

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on: Mar 21, 2021

Question 1

You dissolve 1.25 grams of an unknown diprotic acid in 200.0 mL of H2O. This solution is just neutralized by 5.00 mL of a 1.00 M NaOH solution. What is the molar mass of the unknown acid?

◦ 250
◦ 125
◦ 31.3
◦ 500
◦ None of these are correct.

Question 2

You have 100.0 mL of 0.100 M aqueous solutions of each of the following acids: HCN, HF, HCl, and HC2H3O2. You titrate each with 0.100 M NaOH (aq). Rank the pHs of each of the solutions when each are titrated to the equivalence point, from highest to lowest pH.
 
Ka for HCN = 6.2 × 10–10
 
Ka for HF = 7.2 × 10–4
 
Ka for HC2H3O2 = 1.8 × 10–5
 

​


◦ HCN, HC2H3O2, HF, HCl
◦ HCl, HF, HCN, HC2H3O2
◦ HF, HCN, HC2H3O2, HCl
◦ HC2H3O2, HCl, HCN, HF
◦ None of these are correct.
Chemistry: An Atoms First Approach ¦ Zumdahl, DeCoste ¦ 3rd Edition
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Marked as best answer by bobbie on Mar 21, 2021

ansleighelindsey

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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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bobbie

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Reply 2 on: Mar 21, 2021
YES! Correct, THANKS for helping me on my review

rachel

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Reply 3 on: Yesterday
Excellent

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