A buffer solution is 0.452 M in HClO and 0.357 M in KClO . If Ka for HClO is 3.5×10-8 , what is the pH of this buffer solution?

A 1000.0 mL solution contains 0.150 M NaCIO and 0.200 M HCIO. What is the pH of this solution before and after adding 100.0O mL of 0.100 M NAOH? Ką of HCIO = 2.9 x 10-8 pH= 7.66 before adding any NAOH and pH = 7.61 after adding 100.0 mL of 0.100 M NaOH. pH= 7.66 before adding any NaOH and pH = 7.71 after adding 100.0 mL of 0.100 M NaOH. %3D None of these pH= 7.41 before adding any NaOH and pH = 7.36 after adding 100.0 mL of 0.100 M NaOH. pH = 7.41 before adding any NaOH and pH = 7.46 after adding 100.0 mL of 0.100 M NaOH,

2. You are given three solutions: HCI (Solution A); NaOH (Solution B); pH = 8.76 solution (Solution S). You are asked to prepare the following solutions, starting with Solution S, and adding small amounts of Solution A or Solution B %3D to it. a. A solution of pH = 7.00 To Solution S, carefully add small amounts of Solution A/ Solution B (Circle one) till the required pH is reached. b. A solution of pH = 6.54 To Solution S, carefully add small amounts of Solution A / Solution B (Circle one) till the required pH is %3D reached. A solution of pH = 9.87 To Solution S, carefully add small amounts of Solution A / Solution B (Circle one) till the required pH is С. %3D reached.

5. Which of the following is a conjugate acid-base pair? H₂PO4 and HPO4² HCO3 and CO32 NaOH and OH H₂SO4 and SO 6. A 0.05M NH4Cl solution is prepared at 25°C. k, for NH3 at 25°C is 1.8 × 105. What is the pH of the solution? 3.03 5.28 8.72 4.12 7. CaO is mixed in H₂O to produce Ca(OH)₂. What is the name of the product? Calcium oxide Calcium (II) oxide Calcium hydroxide Calcium (il) hydroxide