An aqueous solution contains 0.35 M sodium fluoride. 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.)0.34 mol NaCl0.35 mol HBr0.17 mol HBr0.17 mol NaOH0.34 mol HF

Some liquids can be distilled, but only at temperatures that are so high that it is impractical, or so high the compound decomposes. explain why distillation such compounds at significantly less than atmospheric pressure (some degree of vacuum) would solve this problem.