A Solution Has [HC₇H₅O₂] = 0

question 65

Multiple Choice

A solution has [HC₇H₅O₂] = 0.100 M and [Ca(C₇H₅O₂) ₂] = 0.200 M. Ka = 6.3 × 10^-5 for HC₇H₅O₂. The solution volume is 5.00 L. What is the pH of this solution after 5.00 ml 10.0 M HCl is added?

• A) 4.80
• B) 4.86
• C) 4.65
• D) 4.70
• E) 4.75

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