Ka, Kb of Weak Acids and Bases

Table of Contents: 02:03 - Differences Between Strong and Weak Substances 02:14 - 03:14 - Ka for a Weak Acid 04:16 - Kb for a Weak Base 05:17 - Add Two Different Reactions Together 07:35 - 08:21 - Calculating the pH of a Weak Acid or Weak Base Solution 09:32 - 1. Predict whether equilibrium lies predominantly to the left or to the right for each of the following acid-base reactions using the chart of relative magnitudes of the Ka of each acid/conjugate acid and the Kb of each base/conjugate base.a. HCl(aq) + H2O(l) → Cl-(aq) + H3O+(aq)b. ClO-(aq) + H2O(l) ⇄ HClO(aq) + OH-(aq)c. HNO2(aq) + HS-(aq) ⇄ NO2-(aq) + H2S(aq)d. NH4+(aq) + F-(aq) ⇄ NH3(aq) + HF(aq) 11:02 - 1. Predict whether equilibrium lies predominantly to the left or to the right for each of the following acid-base reactions using the chart of relative magnitudes of the Ka of each acid/conjugate acid and the Kb of each base/conjugate base.a. HCl(aq) + H2O(l) → Cl-(aq) + H3O+(aq) 11:42 - 1. Predict whether equilibrium lies predominantly to the left or to the right for each of the following acid-base reactions using the chart of relative magnitudes of the Ka of each acid/conjugate acid and the Kb of each base/conjugate base.b. ClO-(aq) + H2O(l) ⇄ HClO(aq) + OH-(aq) 12:23 - 1. Predict whether equilibrium lies predominantly to the left or to the right for each of the following acid-base reactions using the chart of relative magnitudes of the Ka of each acid/conjugate acid and the Kb of each base/conjugate base.c. HNO2(aq) + HS-(aq) ⇄ NO2-(aq) + H2S(aq) 13:11 - 1. Predict whether equilibrium lies predominantly to the left or to the right for each of the following acid-base reactions using the chart of relative magnitudes of the Ka of each acid/conjugate acid and the Kb of each base/conjugate base.d. NH4+(aq) + F-(aq) ⇄ NH3(aq) + HF(aq) 13:54 - 2. Calculate the pH and percent dissociation of a 0.10 M solution of CH3COOH, acetic acid, which is a weak, monoprotic acid and has a Ka value of 1.8 x 10-5. 14:18 - Marker 15:44 - 2. Calculate the pH and percent dissociation of a 0.10 M solution of CH3COOH, acetic acid, which is a weak, monoprotic acid and has a Ka value of 1.8 x 10-5. 17:06 - 2. Calculate the pH and percent dissociation of a 0.10 M solution of CH3COOH, acetic acid, which is a weak, monoprotic acid and has a Ka value of 1.8 x 10-5. 17:52 - 2. Calculate the pH and percent dissociation of a 0.10 M solution of CH3COOH, acetic acid, which is a weak, monoprotic acid and has a Ka value of 1.8 x 10-5. 18:32 - 3. Urea (H2NCONH2) is a weak organic base. If the pH of a 5.6 x 10-3 M solution of urea in water is 5.90, what are the values of Kb and pKb for this compound? 20:25 - 3. Urea (H2NCONH2) is a weak organic base. If the pH of a 5.6 x 10-3 M solution of urea in water is 5.90, what are the values of Kb and pKb for this compound?