Calculate the pH of 1.00 L of the buffer 1.08 M CH3COONA/0.97 M CH3COOH before and after the addition of the following species. (Assume there is no change in volume.) (a) pH of starting buffer: (b) pH after addition of 0.080 mol NaOH: (c) pH after further addition of 0.121 mol HCl:

The following pH curve is for the titration of 20.0 mL of a 0.10 M solution of a weak monoprotic base with a 0.10 M solution of a strong monoprotic acid. (a) What is the pH before any titrant has been added? (b) Wh Data points at 1 mL increments. the pH the midpoint the titration? (c) What is the pH at the equivalence point? (d) What is the value of K, for the weak base? 12.0 10.0 8.0 2 6.0 4.0 2.0 0.0 0.0 10.0 20.0 PODAAAAAAAÀÀÀÀÀÀÀÀÀOOOOOOO 30.0 Volume of titrant (mL) 40.0 50.0

Give a clear handwritten answer with explanation

Be sure to answer all parts. Calculate the pH during the titration of 40.00 mL of 0.1000 M HCl with 0.1000 M NaOH solution after the following additions of base: (a) 30.00 mL pH = (b) 39.40 mL pH = (c) 55.00 mL pH =

A buffer solution is prepared that is 0.78 M HCN and 0.14 M NaCN. What is the pH of the solution? (Ka(HCN) = 4.9 × 10−10) 4 sig figs please

Give the letters of the solutions below that represent buffers. (a) a solution of oxalic acid and potassium hydrogen oxalate; (b) a solution of formic acid and potassium formate; (c) a solution of potassium sulfate and potassium hydroxide; ( d) a solution of methylamine and methylammonium chloride.

Would a 0.010 M buffer solution or a 0.10 M buffer solution have a greater buffering capacity for neutralizing the addition of an acid or base? Please explain.

How many mol of HCI would have to be added to 0.504 L of a 1.416 M B: in order to obtain a buffer with a pH of 9.53? (The Kb for B: is 1.03 10-5). Assume there is no volume change.

Determine the pH during the titration of 32.5 mL of 0.333 M ethylamine (C₂H5NH₂, Kb = 4.3x10-4) by 0.333 M HCIO4 at the following points. (a) Before the addition of any HCIO4 (b) After the addition of 13.5 mL of HCIO4 (c) At the titration midpoint (d) At the equivalence point (e) After adding 49.1 mL of HCIO4

22. Which of the following will give a buffer solution when equal volumes of the two solutions are mixed? (a) 0.10 M HNO, and 0.10 M NaNO, ( b) 0.10 M HC,H,O, and 0.10 M Nac,H,O, (c) 0.10 M HC,H;O, and 0.20 M NaOH (d) 0.10 M HI and 0.20 M NaBr