Which response identifies the statements true of buffer solutions?

Which response identifies the statements trueof buffer solutions?l) A buffer solution could consist of equalconcentrations of ammonia and ammo-nium bromide.2) A buffer solution could consist of equalconcentrations of perchloric acid (HClO4)and sodium perchlorate.3) A buffer solution will change only slightlyin pH upon addition of small amounts ofacid or base.4) In a buffer solution containing benzoicacid (C6H5COOH) and sodium benzoate(NaC6H5COO) the species that reactswith added hydroxide ion is the benzoate

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