Calculate the PH of a Solution Made by a Mixture

question 54

Multiple Choice

Calculate the pH of a solution made by a mixture of the following acids: 0.40 M HC₂H₃O₂ (K_a = 1.8  10^-5) , 0.10 M HOCl (K_a = 3.5  10^-8) , and 0.20 M HCN (K_a = 6.2  10^-10) .

• A) 2.57
• B) 3.92
• C) 4.95
• D) 4.23
• E) 3.49

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