Homework Answers
Base accept proton from water to gives OH^-
B is base react with water to gives BH^+ and OH^-
B + H2O <------> BH^+ + OH^-
Kb = [BH^+][OH^-]/[B]
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3) Bases accept protons or hydronium ions in aqueous solutions. The equilibrium constant Kb describes the...
you. 12e) phenolphthalein (color change between pH-8-10), bromocresol green color change between pH 3-4) are provided...
you. 12e) phenolphthalein (color change between pH-8-10), bromocresol green color change between pH 3-4) are provided to pH change at point of Proposed indicator inflection titration between HCl and 1 to 11 NaOH 12d) Calculate the pH of the solution when 10 mL of 0.1 M NaOH is added to 25 mL 0.1 M HCI .Write appropriate chemical equations if required and show your math!!!(4 points) In the ICE table started for calculating equilibrium concentrations of the reaction shown, the...
The base ionization constant Kb describes which of the following reactions for a weak base, B, in aqueous solut...
The base ionization constant Kb describes which of the following reactions for a weak base, B, in aqueous solution? OB(aq)+H*(aq) 5 BH*(24) B(aq) + H, 0*(aq) SBH*(aq) + H,00) B(aq)+ H,00) S BH(aq) + OH(aq) OB(aq) + OH"(aq) 5 BH"(aq) +0*- (aq) OBH*(aq) + OH"(aq) B(aq) + H20(1)
The degree to which a weak base dissociates is given by the base-ionization constant, Kb. For...
The degree to which a weak base dissociates is given by the base-ionization constant, Kb. For the generic weak base, B B(aq)+H2O(l)⇌BH+(aq)+OH−(aq) this constant is given by Kb=[BH+][OH−][B] Strong bases will have a higher Kb value. Similarly, strong bases will have a higher percent ionization value. Percent ionization=[OH−] equilibrium[B] initial×100% Strong bases, for which Kb is very large, ionize completely (100%). For weak bases, the percent ionization changes with concentration. The more dilute the solution, the greater the percent ionization....
Lab 5 Buffers 1. Dissolved ions in salt solutions can act as acids or bases and...
Lab 5 Buffers 1. Dissolved ions in salt solutions can act as acids or bases and react with water to produce hydronium ions or hydroxide ions that contribute to the pH of the salt solution. Since strong acids and strong bases completely ionize in solution, the reverse reaction essentially does not occur, meaning that the resulting conjugate base of a strong acid or conjugate acid of a strong base do NOT act as acids or bases. Ions that are conjugate...
9) Which one of the following pairs cannot be mixed together to form a buffer solutions...
9) Which one of the following pairs cannot be mixed together to form a buffer solutions A) KOH, HNO2 B) H2S03. KHSO3 C) HONH2, HONH3CI D) NaCI, HCI E) RbOH, HF 10) The Henderson-Hasselbalch equation is acid) acid] A) pH- pKa log basel base] D) pH - pKaobase [acid 11) HA is a weak acid. Which equilibrium corresponds to the equilibrium constant Kp for A- A) A (aq) H30+ (aq) HA (aq) H20 0) B) HA (aq) + OH-(aq) 근...
Need Help on 1-6 please 1. Mercury ions exit as the mercurous dimer Hg22+ and Hgt....
Need Help on 1-6 please
1. Mercury ions exit as the mercurous dimer Hg22+ and Hgt. If Hg22+ is in contact with liquid mercury, Hg (1), the following equilibrium is established: Hgt(aq) → Hg22+(aq) + Hg(1) K= 2.24x10-5 If a 0.15 M solution of Hgt is put in contact with liquid mercury, what will be the resulting equilibrium concentration of Hg22+? Show work a. 3.36 x 10-6 M b. 1.83 x 10-3 M c. 1.14 x 10-2 M d. 0.83...
A) H20 c) нсоз- E) H2CO3 DOH. 22) Which of the following statements correctly describes the...
A) H20 c) нсоз- E) H2CO3 DOH. 22) Which of the following statements correctly describes the hydronium-hydroxide balance in the given solution? A) In acids, [OH-] is greater than [H3O* B) In bases, [OH-]- [H3o*]. C) In neutral solutions, [H3O"] = [H20]. D) In bases, [OH-] is greater than [H3o*]. E) In bases, [OH-] is less than [H30*]. 23) Which of the following is a buffer system? A) NaCl(aq) and NaNO3(aq) C) H2CO3(aq) and KHCO3 (aq) E) H20(0) and HCl(aq)...
* Question Completion Status Svante Antonlus, a Swedish scientist, detined the behavior of acids and bases...
* Question Completion Status Svante Antonlus, a Swedish scientist, detined the behavior of acids and bases in aqueous solution in terms of reactions Invang hydrogen Ions (aka protons, H). According to the Arrhenius definition an acld will lontze by donating a hydrogen lon to a base (E) to form its conjugate bose (A) The Arrhenius definition states that a base (B) willonize by accepting a proton from an acidHA to form its conjugate acid (BH) The general form of this...
In aqueous solution, the azide ion, N3−, is a weak base that accepts a proton from...
In aqueous solution, the azide ion, N3−, is a weak base that accepts a proton from water to form the hydroxide ion, OH −, and hydrazoic acid, HN3, according to the following equation. N3−(aq) + H2O(l) equilibrium reaction arrow OH −(aq) + HN3(aq) The base-dissociation constant (Kb) for this base is 4.04 ✕ 10−10. If a 0.082 M solution of azide ions is prepared, what is the final pH of the solution? (Assume that the temperature is 25°C.)
Identifying Conjugate Acid-Base Pairs Phosphoric acid reacts with water to yield dihydrogen phosphate ions and hydronium...
Identifying Conjugate Acid-Base Pairs Phosphoric acid reacts with water to yield dihydrogen phosphate ions and hydronium ions: H,POs+H2O H2PO +H,0 Identify the conjugate acid-base pairs. Drag each item to the appropriate bin. View Available Hint(s) Reset Help но Н.РО, Н,РО, но Conjugate base Acid Вase Conjugate acid Identifying Conjugate Acid-Base Pairs Dihydrogen phosphate reacts with water to produce hydrogen phosphate ions and hydronium ions: H2PO H2O HPO,2+H0 Identify the conjugate acid-base pairs Drag each item to the appropriate bin. View...
you. 12e) phenolphthalein (color change between pH-8-10), bromocresol green color change between pH 3-4) are provided to pH change at point of Proposed indicator inflection titration between HCl and 1 to 11 NaOH 12d) Calculate the pH of the solution when 10 mL of 0.1 M NaOH is added to 25 mL 0.1 M HCI .Write appropriate chemical equations if required and show your math!!!(4 points) In the ICE table started for calculating equilibrium concentrations of the reaction shown, the...
The base ionization constant Kb describes which of the following reactions for a weak base, B, in aqueous solution? OB(aq)+H*(aq) 5 BH*(24) B(aq) + H, 0*(aq) SBH*(aq) + H,00) B(aq)+ H,00) S BH(aq) + OH(aq) OB(aq) + OH"(aq) 5 BH"(aq) +0*- (aq) OBH*(aq) + OH"(aq) B(aq) + H20(1)
9) Which one of the following pairs cannot be mixed together to form a buffer solutions A) KOH, HNO2 B) H2S03. KHSO3 C) HONH2, HONH3CI D) NaCI, HCI E) RbOH, HF 10) The Henderson-Hasselbalch equation is acid) acid] A) pH- pKa log basel base] D) pH - pKaobase [acid 11) HA is a weak acid. Which equilibrium corresponds to the equilibrium constant Kp for A- A) A (aq) H30+ (aq) HA (aq) H20 0) B) HA (aq) + OH-(aq) 근...
Need Help on 1-6 please
1. Mercury ions exit as the mercurous dimer Hg22+ and Hgt. If Hg22+ is in contact with liquid mercury, Hg (1), the following equilibrium is established: Hgt(aq) → Hg22+(aq) + Hg(1) K= 2.24x10-5 If a 0.15 M solution of Hgt is put in contact with liquid mercury, what will be the resulting equilibrium concentration of Hg22+? Show work a. 3.36 x 10-6 M b. 1.83 x 10-3 M c. 1.14 x 10-2 M d. 0.83...
A) H20 c) нсоз- E) H2CO3 DOH. 22) Which of the following statements correctly describes the hydronium-hydroxide balance in the given solution? A) In acids, [OH-] is greater than [H3O* B) In bases, [OH-]- [H3o*]. C) In neutral solutions, [H3O"] = [H20]. D) In bases, [OH-] is greater than [H3o*]. E) In bases, [OH-] is less than [H30*]. 23) Which of the following is a buffer system? A) NaCl(aq) and NaNO3(aq) C) H2CO3(aq) and KHCO3 (aq) E) H20(0) and HCl(aq)...
* Question Completion Status Svante Antonlus, a Swedish scientist, detined the behavior of acids and bases in aqueous solution in terms of reactions Invang hydrogen Ions (aka protons, H). According to the Arrhenius definition an acld will lontze by donating a hydrogen lon to a base (E) to form its conjugate bose (A) The Arrhenius definition states that a base (B) willonize by accepting a proton from an acidHA to form its conjugate acid (BH) The general form of this...
Identifying Conjugate Acid-Base Pairs Phosphoric acid reacts with water to yield dihydrogen phosphate ions and hydronium ions: H,POs+H2O H2PO +H,0 Identify the conjugate acid-base pairs. Drag each item to the appropriate bin. View Available Hint(s) Reset Help но Н.РО, Н,РО, но Conjugate base Acid Вase Conjugate acid Identifying Conjugate Acid-Base Pairs Dihydrogen phosphate reacts with water to produce hydrogen phosphate ions and hydronium ions: H2PO H2O HPO,2+H0 Identify the conjugate acid-base pairs Drag each item to the appropriate bin. View...
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