A buffer solution is 0.371 M in HF and 0.226 M in KF . If Ka...

Question

Question

A buffer solution is 0.371 M in HF and 0.226 M in KF . If K_a for HF is 7.2×10^-4, what is the pH of this buffer solution?

Answer 1

Answer #1

CHEJ = 0.3714 [ki] = 0.2264 ka f HF = 7.24104 pka = -log (7.2010) = 4- log (7.2) = 4 - 0.8573 = 3.1426 Apply kunder sons argu

Answer 2

Similar Homework Help Questions

2 A buffer solution is 0.408 M in HF and 0.379 M in KF. If Ka...

2 A buffer solution is 0.408 M in HF and 0.379 M in KF. If Ka for HF is 7.2x10 4, what is the pH of this buffer solution?
You have solutions of 0.200 M HF and 0.200 M KF (Ka for HF = 7.2...

You have solutions of 0.200 M HF and 0.200 M KF (Ka for HF = 7.2 × 10–4). A buffer of pH 3.00 is needed. What volumes of HNO2 and KNO2 are required to make 1 L of buffered solution? I am really confused about how to do every step of this. Please write it out and explain EVERYTHING. Thank you
Calculate the pH and [H3O+] of a buffer solution consisting of 0.50 M HF (Ka =...

Calculate the pH and [H3O+] of a buffer solution consisting of 0.50 M HF (Ka = 6.8 × 10-4) and 0.45 M KF.

Consider a solution which is 0.10 M in HF and 0.15 M in KF. If 0.10...

Consider a solution which is 0.10 M in HF and 0.15 M in KF. If 0.10 moles of NaOH is added to the solution, which of the following is true? The Ka for HF is 3.5 x 10-4 (at 25ºC) Group of answer choices The pH of the solution will not change. The buffer capacity of the solution will be exhausted. The pH of the solution will decrease. The Ka of HF will decrease.
What is the pH of a buffer solution that is 0.400 M in HF and 0.790...

What is the pH of a buffer solution that is 0.400 M in HF and 0.790 M in NaF? Ka of HF = 7.2 ✕ 10-4.
37. You have 500.0 mL of a buffer solution that is 0.30 M HF and 0.50...

37. You have 500.0 mL of a buffer solution that is 0.30 M HF and 0.50 M KF. Ka for HF is 7.1 x 10-4 a) Calculate the pH of the buffer. b) Calculate the pH of the buffer after adding 0.020 moles of HCI. c) Calculate the pH of the buffer after adding 0.030 moles KOH. - -Loel.

Consider a buffer solution comprised of HF and F-. The Ka of HF is 6.3 x...

Consider a buffer solution comprised of HF and F-. The Ka of HF is 6.3 x 10-4. If the pH of the buffer solution is 3.64 and [HF] = 0.110 M, how many moles of F- are present? The volume of the buffer solution is 297 mL.
A 1.0-liter solution contains 0.25 M HF and 0.32 M NaF (Ka for HF is 7.2...

A 1.0-liter solution contains 0.25 M HF and 0.32 M NaF (Ka for HF is 7.2 × 10–4). What is the pH of this solution
The pK, value for HF is 3.14. Would a buffer prepared from HF and KF with...

The pK, value for HF is 3.14. Would a buffer prepared from HF and KF with a pH of 2.64 be considered to be an effective buffer? A buffer in which the mole ratio of KF to HF is 0.42 has a pH of 2.76. Would this buffer solution have a greater capacity for added acid (H,0) or added base (OH)? added acid added base Submit Answer Retry Entire Group 1 more group attempt remaining A buffer solution that is...

A buffer solution contains 1.0 M HF and 1.0 M NaF. The ka for HF is...

A buffer solution contains 1.0 M HF and 1.0 M NaF. The ka for HF is 7.2x10-5. 0.10 moles of HCl are added to 1 liter of the buffer. The pH of the resulting solution is a) 4.05 b) 4.14 c) 4.23 d) 4.74