Consider the following reaction: 2 H₂O(g) +2 SO₂(g) = 2 H₂S(g) + 3 O₂(g) A reaction mixture initially contains 2.8 M H₂O
Posted: Sat Jul 02, 2022 8:23 pm
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Question 13 0/15 pts Please read the questions carefully and answer them as directed. You must show math work and formula(s) where it is appropriate to receive full credit. a) Calculate the pH of a buffer solution prepared by 0.10 M HF and 0.15 M NaF (Ka for HF is 3.5 x 104). (b) Suppose you add 100.0 mL of 0.10 M sodium hydroxide to 1 L of buffer solution in part a. What would be the pH of the result? (c) Suppose you add 100.0 mL of 0.10 M hydrochloric acid to 1 L of buffer solution in part a. What would be the pH of the result?
Question 11 0/25 pts An 100.0 mL sample of 0.200 M ammonia (NH3) is titrated with 0.150 M hydrochloric acid (HCI). Kb for NH, is 1.8 x 105. Calculate the pH of the solution at each of the following points of the titration. You must show math work and formula(s) where it is appropriate to receive full credits. (a) The initial pH of 0.200 M ammonia (NH₂) (b) At one-half the equivalence point (c) At the equivalence point of 100.0 ml. HCI (d) After the addition of 200.0 mL HCI
Question 12 8/15 pts Please read the questions carefully and answer them as directed. You must show math work and formula(s) where it is appropriate to receive full credit. (a) Write two equations as how each salt ion is reacting with water in NaC₂H₂O₂ (aq). (b) Would the resulting solution of ammonium chloride be acidic, basic, or neutral? Explain using equation from part (a). (c) Determine the pH of a solution of ammonium chloride that is 0.465 M. (Ka for HC₂H₂O₂ is 1.8 x 105). If an ICE box or a before and after box is needed, please show them to receive full credit.