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The active ingredient of Pepto-Bismol is the compound bismuth subsalicylate, which undergoes the following dissociation when added to water:
If the maximum amount of bismuth subsalicylate that reacts by this reaction is 3.2 × 10−19 mol/L, calculate the equilibrium constant for the preceding reaction.
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- At 25 oC, Ammonia is a weak base that reacts with water according to this equation: NH3(aq) + H2O(aq) ⇌ NH4+(aq) + OH−(aq) Briefly explain how the equilibrium will shift (to get back to equilibrium) if the following perturbations are made to the system: (a) Addition of HCl (b) Addition of NaOH (c) Addition of NH4Clarrow_forwardConsider the following chemical reaction at equilibrium: NH₃(aq) + H₂O(l) ⇌ NH₄⁺(aq) + HO⁻(aq) If one drop of aqueous sodium hydroxide (NaOH) is added, in which direction will the equilibrium shift? A) reactants B) products C) neither the reactants nor the productsarrow_forwardThe equilibrium expression for the hydrolysis of a weak base, A™, in water is: OK=[A]/[OH-][H3O+] K₁ = [OH-][HA]/[A-][H30*] OK₂= [OH-][A-]/[HA] O K₂ = [OH-][H3O*]/[A-] K₁ = [OH-][HA]/[A-]arrow_forward
- COHSOH(ag) + H2On + CeHsO (aq) + H3O*(a9) Ka= 1.12 x 10-10 (a) Phenol is a weak acid that partially dissociates in water according to the equation above. Write the equilibrium-constant expression for the dissociation of the acid in water. (b) What is the pH of a 0.75 M CaHsOH(ag) solution? (C) For a certain reaction involving CaHsOH(ag) to proceed at a significant rate, the phenol must be primarily in its deprotonated form, C3H5O (eg). In order to ensure that the CsHsOH(aq) is deprotonated, the reaction must be conducted in a buffered solution. On the number scale below, circle each pH for which more than 50 percent of the phenol molecules are in the deprotonated form (CoHsO (aq). Justify your answer. 1 2 3 4 5 6 7 8 9 10 11 12 13 14 Justification: (d) CeHsOH(ag) reacts with NaOH(ag). Write a net ionic equation representing this reaction (aka: invasion equation). (e) What is the pH of the resulting solution when 30 mL of 0.40 M CSH5OH(aq) is added to 25 mL of 0.60 M NAOH. Show all work…arrow_forwardWrite equilibrium-constant expressions for each of the following: A) the base dissociation of ethyl-amine, CH3CH2NH2. B) the acid dissociation of hydrogen cyanide, HCN. C) the dissociation of H3AsO4 to H3O^+ and AsO4^3-. D) the reaction of CO3^2- with H2O to give H2CO3 and OH^-.arrow_forwardGiven that K₂ for HClO is 4.0 × 10-8 at 25 °C, what is the value of K for ClO¯ at 25 °C? a Kb = Given that K for (CH³)²N is 6.3 × 10−5 at 25 °C, what is the value of Kå for (CH³)²NH+ at 25 °C? a Ka =arrow_forward
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