Black Coffee Has a PH of 5

question 21

Multiple Choice

Black coffee has a pH of 5.0. What is the concentration of H₃O⁺ in the coffee?

• A) 1  10^-5 M
• B) 1  10^-9 M
• C) 1  10^-7 M
• D) 1  10^-11 M

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