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ECAT Chemistry QUESTION #807
Question 1
The pH of \(10^{-3}\) moles of \(\text{HNO}_3\) is?
  • 2.7
  • 2.0
  • 3✔️
  • 1.5
Correct Answer Explanation
\(\text{HNO}_3\) is a strong acid that fully dissociates. \([\text{H}^+] = 10^{-3}\ \text{mol dm}^{-3}\). \(\text{pH} = -\log(10^{-3}) = 3\).