Calculate the pH of a 0.10 M HCN solution that is 0.0070% ionized.
A) 1.00
B) 0.00070
C) 3.15
D) 5.15
E) 7.00

Name: Calculate the pH of a 0.10 M HCN solution that is 0.0070% ionized. A) 1.00 B) 0.00070 C) 3.15 D) 5.15 E) 7.00
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Quizplus · Accepted Answer

The degree of ionization is 0.0070%, which means [H+] = 0.10 M * 0.000070 = 7.0 x 10^-5 M. The pH is calculated as -log(7.0 x 10^-5) = 5.15.

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