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amandajennings01
16.10.2019 •
Chemistry
how are percent ionization values similar to equilibrium constant values? explain your reasoning and identify which weak acid would have the smallest equilibrium constant.
weak acid
percent ionization
hno2
6.2%
hclo2
28.2%
hcn
0.007%
Solved
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Ответ:
Consider the HCN which is 0.007% ionization. For a 0.10 M solution, 0.00007(.10) will give the [H+] = 7 x 10^-6
K = [H+][CN-]/[HCN]
K = 7 x 10^-6*(7 x 10^-6)/0.1
K = 4.9 x 10^-10
Consider the HClO2 which is 28.2%. [H+] = 0.28(0.10) = 0.028. Substituting in the K expression
0.028(0.028)/0.10 - 0.028 which will give a larger equilibrium constant.
Ответ:
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