A 0.771 M solution of a weak base (B:) is made. The solution has a pH...
A 0.645 M solution of a weak base (B:) is made. The solution has a pH of 11.99. Calculate the Kb of this base. Report your answer in scientific notation with 3 sig figs.
For a weak base (B), a 0.0100 M and a 0.100 M solution was made. Students obtained the following pH value for the solution. Fill in the table. Report all answers (except pH or pOH values) in scientific notation. 0.0100 M B 0.100 M B pOH 4.32 3.48 [OH-] [BH+] [B] (at equilibrium) Kb For the same solution fill out the following information: 0.0100 M B 0.100 M B pH (Do not...
Determine the Kb of a weak base if a 0.52 M solution of the base has a pH of 10.68 at 25°C. Kb = ? × 10 ? (Enter your answer in scientific notation.)
A weak monoprotic acid, HA dissociates by 1.300 % and has a pH of 2.15. Calculate the Ka value for the acid HA. Record your answer in scientific notation to 3 sig figs. Preview
1) A 8.65 ⋅ 10-3 M solution of HClO4 is made. -What is the pH of this solution? -What is the pOH of this solution? -What is the [OH-] in the solution? Record this answer in scientific notation using 3 sig figs. 2)A 4.23⋅10-2 M solution of NaOH is made. -What is the pOH of this solution? -What is the pH of this solution? -What is the [H+] in the solution? Record this answer in scientific notation using 3 sig...
(a) Determine the Kb of a weak base if a 0.847 M aqueous solution of the base at 25°C has a pH of 10.88. (Enter your answer in scientific notation.) (b) Determine the concentration of a solution of ammonium chloride (NH4Cl) that has pH 5.19 at 25°C. (c) Calculate the pH of a 0.011 M NaF solution. (Ka for HF = 7.1 × 10−4.)
Calculate the (H+] in a solution that is 0.784 M in Nax and 0.440 M in HX given that the Ka of HX is 1.64 . 10-3. Report your answer in scientific notation to 3 sig figs. Preview
A 0.0030 M solution of a weak base, B, has a pH of 10.75. Calculate the Kb of this base.
A 0.10 M solution of a weak acid, “HA”, has a pH of 5.20. Calculate [H3O+]. Keep 2 sig figs in your answer.
A 0.324 M solution of a weak base (B:) is made. The Kb for this acid is 7.62 · 10%. What is the pOH of this solution? What is the pH of this solution?