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An aqueous solution contains 0.30M ammonium bromide. One liter of this solution could be converted into a buffer by the addition of: (Assume that the volume remains constant as each substance is added.) (Select all that apply.) 0.29molNH3 0.29molCaBr2 0.14molNaOH 0.30molHClO4 0.14molHClO4 An aqueous solution contains 0.23M potassium nitrite. One liter of this solution could be converted into a buffer by the addition of: (Assume that the volume remains constant as each substance is added.) (Select all that apply.) 0.23molHBr 0.22molHNO2 0.11molNaOH 0.22molKCl 0.11molHBr An aqueous solution contains 0.25M ammonia. One liter of this solution could be converted into a buffer by the addition of: (Assume that the volume remains constant as each substance is added.) (Select all that apply.) 0.26molHClO40.12molHClO40.12molBa(OH)20.26molNH4ClO40.25molBa(ClO4)2