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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 69 times)

HudsonKB16

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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


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Marked as best answer by HudsonKB16 on Mar 21, 2021

cam1229

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HudsonKB16

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


covalentbond

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Reply 3 on: Yesterday
Wow, this really help

 

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