MDCAT Chemistry MCQ #56

Comparing the acidic strength, approximately how many times more acidic is phenol than ethanol based on their Ka values?

MDCAT Chemistry MCQ #56

  1. Question 1

    Q1. Comparing the acidic strength, approximately how many times more acidic is phenol than ethanol based on their Ka values?

    • A) 10^2 times
    • B) 10^4 times
    • C) 10^6 times
    • D) 10^8 times

    Answer: 10^6 times

    Explanation: Phenol (Ka ~10^-10) is much more acidic than Ethanol (Ka ~10^-16). Ethanol's pKa is roughly 16, while phenol is 10.