A buffer solution contains 0.219 M ammonium bromide and 0.312 M ammonia. If 0.0603 moles of perchloric acid are added to 250 mL of this buffer, what is the pH of the resulting solution ? (Assume that the volume does not change upon adding perchloric acid) pH =

A sample of 25.0 mL of buffer solution contains 0.100 M fluoride ions and 0.126 M hydrofluoric acid. If 4.93 mL of 0.0100 M HCI are added to the sample, what is the resulting concentration of fluoride ions?

A 48.3 mL sample of a 0.492 M aqueous hypochlorous acid solution is titrated with a 0.229 M aqueous solution of potassium hydroxide. How many milliliters of potassium hydroxide must be added to reach a pH of 7.241? mL

You have 1.5 liter of solution that is composed of 8.88 grams of NH3 and 11.33 grams of ammonium chloride mixed well. Kb for ammonia =1.8 x 10^-5 (A) is this a buffer solution? Why or why not? (B)if it is a buffer solution, what is the pH of this buffer solution? (C)how many mL of 1.50 M HCl can be added to this solution before the buffer is exhausted (d) how many mL of 1.5 M NaOH can be added to this solution before the buffer is exhausted?