which of the following statements are true of buffer solutions? 1.a buffer solution can be made by mixing equal concentrations of ​acetic acid and sodium acetate. 2.a buffer solution can be made by mixing equal concentrations of ​hydrochloric acid and sodium chloride. 3.a buffer solution resists changes in ph when small quantities of acid ​or base are added. group of answer choices 1 and 3 only 2 and 3 only 1 and 2 only all of 1, 2, and 3 none of 1, 2, and 3