Chemistry - Acids and Bases - pH calculations - pH Calculations Quiz

6-question assessment on pH. Q1: 'What is the pH of 0.0001 M HNO₃?' A) 3 B) 4 C) 10 D) 5 (Answer: B - strong acid, [H⁺]=10⁻⁴, pH=4). Q2: 'A solution has pH 11. What is [OH⁻]?' A) 10⁻¹¹ M B) 10⁻³ M C) 10⁻¹⁴ M D) 3 M (Answer: B - pOH=3, [OH⁻]=10⁻³). Q3: 'Which has the lowest pH?' A) 0.1 M NaOH B) 0.1