15.0 mL of a buffer is made by mixing 10.0 mL of 0.10 M HF and 5.0 mL of 0.10 M NaOH solution. What is the pH of this buffer after 0.072 mL of 10.0 M hydrochloric acid are added to it? The Ka for HF is 6.8 x 10-4.

How many grams of sodium acetate must be added to 2.00L of 0.105M acetic acid to make a buffer that has a pH of 4.90?  (Ignore volume changes due to the addition of the NaC2H3O2).

Please don't provide handwritten solution...   A 1.0 L solution contains 0.100 mol HC2H3O2 and 0.100 mol NaC2H3O2. The value for Ka HC2H3O2 is 1.8 X 10-5. What is the pH of the buffer after adding 0.010 mol NaOH to the buffer.

4. 15.0 mL of a buffer is made by mixing 10.0 mL of 0.10 M HF and 5.0 mL of 0.10 M NaOH solution. What is the pH of this buffer after0.30mL of 1.0 M sodium hydroxide are added to it? The Ka for HF is 6.8 x 10-4.

A buffer is prepared by adding 34.3 mL of 0.46M NaF to 56.8mL of 0.19 M HF. What is the pH Ka for HF=6.8*10^-4

15.0 mL of a buffer is made by mixing 10.0 mL of 0.10 M HF and 5.0 mL of 0.10 M NaOH solution. What is the pH of this buffer after 0.24 mL of 1.0 M sodium hydroxide are added to it? The Ka for HF is 6.8 x 10-4.

Please don't provide handwritten solution...

How many grams of sodium hypochlorite, NaCIO, need to be added to 227 mL of a 0.185 M solution of hypochlorous acid, HCIO, to get a buffer with a pH of 7.92? The Ką for hypochlorous acid is 2.9 × 10-8.