NH2- + H2O ⇌ NH3 + OH- which one is conjugate acid, NH3, H2O, NH2-, OH-, Which of the following is a weak acid?, HCl, HNO3, CH3COOH, H2SO4, Which of the following statements about a buffer solution is correct?, Maintains a nearly constant pH when small amounts of acid or base are added, It contains only a strong acid and a strong base., It always has a pH of 7., It cannot react with added H⁺ ions, Which combination can form an acidic buffer solution?, HCl and NaCl, CH₃COOH and CH₃COONa, NaOH and NaCl, HNO₃ and KNO₃, The pH of a solution is calculated using pH=-log[OH-]., FALSE, TRUE, Which of the following salts produces an acidic aqueous solution?, NaCl, CH₃COONa, KNO₃, NH₄Cl, What is the pH of an acidic solution?, 3, 7, 9, 12, Which ion makes a solution acidic?, OH⁻, Cl⁻, H₃O⁺, Na⁺, A solution with pH 7 is neutral., TRUE, FALSE, A buffer solution helps maintain a stable pH., TRUE, FALSE

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