I need help i do not know how to do this problem at all. Just comment below. A 30 ml sample of of 0.150 m hydrazoic acid (ka = 4.50x10^-4 ) is titrated with a 0.100 m NaOH what is the ph after the ff additions of NaOH 30ml 45ml 60ml . but [H ] should no equal to 2.78*10^-4 M. Hint: you have assumed that the change in acid concentration is not significant. What is the pH after 13.3 mL of base is added? What is the Ka for hydrazoic acid? Calculate the pH of 500ml of 1M hydrazoic acid. Problem #1: Calculate the percent dissociation of a weak acid in a 0.050 M HA solution. Relevance. Keep in mind that the Ka of hydrazoic acid is 2.2 × 10-5. Return to a listing of many types of acid base problems and their solutions. Calculating the pH isn't too tough, and I'm happy to help with any questions you may have. Use the method of successive approximations. Acid Ionization Constants at 25 °C. … PLZ answer this question. If we have 1 molar hydrazoic acid, then how much will dissociate? A 25.0-mL sample of 0.150 M hydrazoic acid is titrated with a 0.150 M NaOH solution. DeWayne D. Anderson. Use the successive approximations approach to solve for [H ] Answer Save. Calculate the Ka for hydrazoic acid. Ka=2.5x10^-5? A 100 mL sample of hydrazoic acid, HN3(aq) with a concentration of 0.25 mol/L has a pH of 2.78. Heavy metal azides, which are salts of hydrazoic acid, HN3, are used as explosive detonators. Update: PH = 3.56 . The Ka of hydrazoic acid is … HAsO 4 2– 3.2×10 –12. Acid Formula K a. Acetic acid HC 2 H 3 O 2 1.8×10 –5 Acrylic acid HC 3 H 3 O 2 5.5×10 –5 Aluminum 3+ ion Al 3+ (aq) 1.4×10 –5 Ammonium ion NH 4 + 5.6×10 –10 Anilinium ion C 6 H 5 NH 3 + 1.4×10 –5 Arsenic acid H 3 AsO 4 6.0×10 –3 H 2 AsO 4 – 1.0×10 –7. Start with the dissociation equation, HA <=> [H+][A-], meaning that Ka = [H+][A-]/[HA]. asked by Omi on August 1, 2013; Chemistry. Answer to: The Ka of hydrazoic acid (HN3) is 1.9 x 10-5 at 25.0 C. What is the pH of a 0.40 M aqueous solution of HN3? 3 Answers. A 30.00 mL sample of 0.1500 M hydroazoic acid (HN3; Ka = 1.9 x 10-5) is titrated with 0.1000 M KOH. A solution of 0.10 M hydrazoic acid has a pH of 3.36. Return to the Acid Base menu.
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