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Author Question: Consider a solution made by mixing HCN (Ka= 6.2 1010) with HC2H3O2(Ka= 1.8 105) in aqueous ... (Read 67 times)

HudsonKB16

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on: Mar 21, 2021

Question 1

Carbonic acid is a diprotic acid, H2CO3, with Ka1 = 4.2 10–7 and Ka2 = 4.8 10–11 at 25ºC. The ion product for water is Kw = 1.0 10–14 at 25ºC. What is the OH– concentration of a solution that is 0.18 M in Na2CO3?

◦ 6.1 10–3M
◦ 2.1 10–4M
◦ 6.5 10–5M
◦ 2.9 10–6M
◦ 2.7 10–4M

Question 2

Consider a solution made by mixing HCN (Ka= 6.2 × 10–10) with HC2H3O2(Ka= 1.8 × 10–5) in aqueous solution. What are the major species in solution?

◦ H+, CN–, H+, C2H3O2–, H2O
◦ HCN, H+, C2H3O2–, H2O
◦ H+, CN–, HC2H3O2, H2O
◦ H+, CN–, H+, C2H3O2–, OH–, H2O
◦ HCN, HC2H3O2, H2O
Chemistry: An Atoms First Approach ¦ Zumdahl, DeCoste ¦ 3rd Edition
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Marked as best answer by HudsonKB16 on Mar 21, 2021

cam1229

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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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HudsonKB16

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Reply 2 on: Mar 21, 2021
Gracias!

ryansturges

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Reply 3 on: Yesterday
Great answer, keep it coming :)

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