Chemistry (OER)
2nd Edition
ISBN: 9781947172616
Author: OpenStax
Publisher: OpenStax College
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Textbook Question
Chapter 14, Problem 47E
Explain why equilibrium calculations are not necessary to determine ionic concentrations in solutions of certain strung electrolytes such as NaOH and HCl. Under what conditions are equilibrium calculations necessary as part of the determination of the concentrations of all ions of some other strong electrolytes in solution?
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Chapter 14 Solutions
Chemistry (OER)
Ch. 14 - Write equations that show NH3 as both a conjugate...Ch. 14 - Write equations that show H2PO4- acting both as an...Ch. 14 - Show by suitable net ionic equations that each of...Ch. 14 - Show by suitable net ionic equations that each of...Ch. 14 - Show by suitable net ionic equations that each of...Ch. 14 - Show by suitable net ionic equations that each of...Ch. 14 - What is the conjugate acid of each of the...Ch. 14 - What is the conjugate acid of each of the...Ch. 14 - Identify and label the Bronsted-Lowry acid, its...Ch. 14 - Identify and label the Bronsted-Lowry acid, its...
Ch. 14 - What are amphiprotic species? Illustrate with...Ch. 14 - State which of the following species are...Ch. 14 - State which of the following species are...Ch. 14 - Is the self-ionization of water endothermic or...Ch. 14 - Explain why a sample of pure water at 40 C is...Ch. 14 - The ionization constant for water (Kw) is 2.91014...Ch. 14 - The ionization constant for water (Kw) is...Ch. 14 - Calculate the pH and the pOH of each of the...Ch. 14 - Calculate the pH and the pOH of each of the...Ch. 14 - What are the pH and pOH of a solution of 2.0 M...Ch. 14 - What are the hydronium and hydroxide ion...Ch. 14 - Calculate the hydrogen ion concentration and the...Ch. 14 - Calculate the hydronium ion concentration and the...Ch. 14 - The hydronium ion concentration in a sample of...Ch. 14 - The hydroxide ion concentration in household...Ch. 14 - Explain why the neutralization reaction of a...Ch. 14 - Explain why the neutralization reaction of a weak...Ch. 14 - Use this list of important industrial compounds...Ch. 14 - The odor of vinegar is due to the presence of...Ch. 14 - Household ammonia is a solution of the weak base...Ch. 14 - Explain why the ionization constant, Ka, for H2SO4...Ch. 14 - Explain why the ionization constant, Ka, for HI is...Ch. 14 - Gastric juice, the digestive ?uid produced in the...Ch. 14 - Nitric acid reacts with insoluble copper (II)...Ch. 14 - What is the ionization constant at 25 C for the...Ch. 14 - What is the ionization constant at 25 C for the...Ch. 14 - Which base, CH3NH2 or (CH3)2NH, is the stronger...Ch. 14 - Which is the stronger acid, NH4+ or HBrO?Ch. 14 - Which is the stronger base, (CH3)3N or H2BO3-?Ch. 14 - Predict which acid in each of the following pairs...Ch. 14 - Predict which compound in each of the following...Ch. 14 - Rank the compounds in each of the following groups...Ch. 14 - Rank the compounds in each of the following groups...Ch. 14 - Both HF and HCN ionize in water to a limited...Ch. 14 - The active ingredient formed by aspirin in the...Ch. 14 - What do we represent when we write:...Ch. 14 - Explain why equilibrium calculations are not...Ch. 14 - Are the concentrations of hydronium ion and...Ch. 14 - What two common assumptions can simplify...Ch. 14 - What two common assumptions can simplify...Ch. 14 - Which of the following will increase the percent...Ch. 14 - Which of the following will increase the percent...Ch. 14 - What is the effect on the concentrations of NO2-,...Ch. 14 - What is the effect on the concentration of...Ch. 14 - Why is the hydronium ion concentration in a...Ch. 14 - From the equilibrium concentrations given,...Ch. 14 - From the equilibrium concentrations given,...Ch. 14 - Determine Kb for the nitrite ion, NO2-. In a...Ch. 14 - Determine Ka for hydrogen sulfate ion, HSO4-. In a...Ch. 14 - Calculate the ionization constant for each of the...Ch. 14 - Calculate the ionization constant for each of the...Ch. 14 - For which of the following solutions must we...Ch. 14 - Even though both NH3 and C6H5NH2 are weak bases,...Ch. 14 - Calculate the equilibrium concentration of the...Ch. 14 - Calculate the equilibrium concentration of the...Ch. 14 - Calculate the equilibrium concentration of the...Ch. 14 - Calculate the equilibrium concentration of the...Ch. 14 - Using the Ka value of , place Al(H2O)63+ in the...Ch. 14 - Calculate the concentration of all solute species...Ch. 14 - Propionic acid, C2H5CO2H (Ka=1.34105), is used in...Ch. 14 - White vinegar is a 5.0% by mass solution of acetic...Ch. 14 - The ionization constant of lactic acid,...Ch. 14 - Nicotine, C10H14N2, is a base that will accept two...Ch. 14 - The pH of a 0.20-M solution of HP is 1.92....Ch. 14 - The pH of a 0.15-M solution of HSO4- is 1.43....Ch. 14 - The pH of a 0.10-M solution of caffeine is 11.16....Ch. 14 - Tile pH of a solution of household ammonia, a...Ch. 14 - Determine whether aqueous solutions of the...Ch. 14 - Determine whether aqueous solutions of the...Ch. 14 - Novocaine, C13H21O2N2Cl, is the salt of the base...Ch. 14 - Which of the following concentrations would be...Ch. 14 - Calculate the concentration of each species...Ch. 14 - Calculate the concentration of each species...Ch. 14 - Salicylic acid, HOC6H4CO2H, and its derivatives...Ch. 14 - The ion HTe- is an amphiprotic species; it can act...Ch. 14 - Explain why a buffer can be prepared from a...Ch. 14 - Explain why the pH does not change significantly...Ch. 14 - Explain why the pH does not change significantly...Ch. 14 - What is [H3O+] in a solution of 0.25 M CH3CO2H and...Ch. 14 - What is [H3O+] in a solution of 0.075 M HNO2 and...Ch. 14 - What is [OH-] in a solution of 0.125 M CH3NH2 and...Ch. 14 - What is [OH-] in a solution of 1.25 M NH3 and 0.78...Ch. 14 - What concentration of NH4NO3 is required to make...Ch. 14 - What concentration of NaF is required to make...Ch. 14 - What is the effect on the concentration of acetic...Ch. 14 - What is the effect on the concentration of...Ch. 14 - What will be the pH of a buffer solution prepared...Ch. 14 - Calculate the pH of a buffer solution prepared...Ch. 14 - How much solid NaCH3CO23H2O must be added to 0300...Ch. 14 - What mass of NH4Cl must be added to 0.750 L of a...Ch. 14 - A buffer solution is prepared from equal volumes...Ch. 14 - A 5.36-g sample of NH4Cl was added to 25.0 mL of...Ch. 14 - Which acid in Table 14.2 is most appropriate for...Ch. 14 - Which acid in Table 14.2 is most appropriate for...Ch. 14 - Which base in Table 14.3 is must appropriate for...Ch. 14 - Which base in Table 14.3 is most appropriate for...Ch. 14 - Saccharin, C7H4NSO3H, is a weak acid (Ka=2.1102)....Ch. 14 - What is the pH of 1.000 L of a solution of 100.0 g...Ch. 14 - Explain how to choose the appropriate acid-base...Ch. 14 - Explain why an acid-base indicator changes color...Ch. 14 - Why can we ignore the contribution of water to the...Ch. 14 - Why can we ignore the contribution of water to the...Ch. 14 - Draw a curve for a series of solutions of HF. Plot...Ch. 14 - Draw a curve similar to that shown in Figure 14.23...Ch. 14 - Calculate the pH at the following points in a...Ch. 14 - The indicator dinitrophenol is an acid with a Ka...
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- The three flasks shown below depict the titration of an aqueous NaOH solution with HCl at different points. One represents the titration prior to the equivalence point, another represents the titration at the equivalence point, and the other represents the titration past the equivalence point. (Sodium ions and solvent water molecules have been omitted for clarity.) a Write the balanced chemical equation for the titration. b Label each of the beakers shown to indicate which point in the titration they represent. c For each solution, indicate whether you expect it to be acidic, basic, or neutral.arrow_forwardACID-BASE EQUILIBRIA Doc Jill wants to determine the Ao of a weak acid she isolated called Yurdaughteric acid (HYd). She prepared a solution of the weak acid by diluting 3.5 mL of 0.10 M HYd with 13.5 mL of water. Upon measuring the conductivity of the solution and a blank, she obtained 192.0 uS/cm and 4.0 uS/cm, respectively. She also measured the pH of the solution and got a pH of 3.12. Help her find the following: 5. a 6. Equilibrium concentration of the weak acid (HYd) 7. K, 8. Aoarrow_forwardAcid strength decreases in the series HI > HSO4 > HF > HCN. Which of these equal molar salt solutions will have the highest pH? There is not enough information given to make a determination. Na2SO4 NaF NaCN Nalarrow_forward
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- The indicator thymol blue changes from red to yellow between pH 1.2 and pH 2.8. If thymol blue is added to a solution, and the solution turns yellow, then the pH of the solution must be above 2.8, and the solution is basic. the pH of the solution must be above 2.8, and the solution is acidic. the solution is basic, and the pH must be at or below 1.2. the pH of the solution is above 2.8, and the solution could be acidic, neutral or basic. the solution is acidic, and the pH must be at or below 1.2.arrow_forwardWhat is an acid–base indicator? Define the equivalence(stoichiometric) point and the end point of a titration.Why should you choose an indicator so that the twopoints coincide? Do the pH values of the two pointshave to be within 60.01 pH unit of each other?Explain.arrow_forwardIf you were to prepare a concentrated buffer and a diluted buffer both at the same pH and then add HCI to each one, what should happen? The pH of both solutions will increase, with the pH of the diluted buffer increasing most. O The pH of both solutions will decrease, with the pH of the diluted buffer decreasing most. O The pH of both solutions will decrease, with the pH of the concentrated buffer decreasing most. O The pH of both solutions will increase, with the pH of the concentrated buffer increasing most. ULOarrow_forward
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