Basic Chemistry
6th Edition
ISBN: 9780134878119
Author: Timberlake, Karen C. , William
Publisher: Pearson,
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Textbook Question
Chapter 14.9, Problem 69PP
Which of the following make a buffer system when added to water? Explain.
a.
c. HF and KF d.
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Students have asked these similar questions
Which of the following pairs of substances will form a buffer when dissolved in water?
A. HC2H3O2 and HF
B. HNO2 and KNO3
C. HCN and NaCN
D. NaCIO and NaCIO2
Which of these can be mixed together in water to produce a buffer solution?
a.
HCN and NaOH
b.
HClO 3 and NaClO 3
c.
All produce a buffered solution.
d.
NH 3 and HCl
e.
HF and KF
The following neutralization reaction occurs in the classroom.HCl + KOH --> H2O + KCl
If a student uses 25.0 mL of a 0.5M solution of KOH, what is the molarity of the acid if the is 15.0mL of acid neutralized?
a. 1.2M
b. 0.8M
c. 12.5M
Chapter 14 Solutions
Basic Chemistry
Ch. 14.1 - Indicate whether each of the following statements...Ch. 14.1 - Prob. 2PPCh. 14.1 - Prob. 3PPCh. 14.1 - Prob. 4PPCh. 14.1 - Write formulas for each of the following acids and...Ch. 14.1 - Write formulas for each of the following acids and...Ch. 14.2 - Identify the reactant that is a Brønsted-Lowry...Ch. 14.2 - Identify the reactant that is a Brønsted-Lowry...Ch. 14.2 - Write the formula for the conjugate base for each...Ch. 14.2 - Write the formula for the conjugate base for each...
Ch. 14.2 - Write the formula for the conjugate acid for each...Ch. 14.2 - Prob. 12PPCh. 14.2 - Prob. 13PPCh. 14.2 - Prob. 14PPCh. 14.2 - When ammonium chloride dissolves in water, the...Ch. 14.2 - Prob. 16PPCh. 14.3 - What is meant by the phrase "A strong acid has a...Ch. 14.3 - Prob. 18PPCh. 14.3 - Prob. 19PPCh. 14.3 - Prob. 20PPCh. 14.3 - Prob. 21PPCh. 14.3 - Prob. 22PPCh. 14.3 - Prob. 23PPCh. 14.3 - Prob. 24PPCh. 14.3 - Prob. 25PPCh. 14.3 - Write an equation for the acid-base reaction...Ch. 14.4 - Answer True or False for each of the following: A...Ch. 14.4 - Answer True or False for each of the following: A...Ch. 14.4 - Consider the following acids and their...Ch. 14.4 - Prob. 30PPCh. 14.4 - Phosphoric acid dissociates to form hydronium ion...Ch. 14.4 - Prob. 32PPCh. 14.5 - Why are the concentrations of H3O+ and OH equal in...Ch. 14.5 - Prob. 34PPCh. 14.5 - Prob. 35PPCh. 14.5 - Prob. 36PPCh. 14.5 - Indicate whether each of the following solutions...Ch. 14.5 - Indicate whether each of the following solutions...Ch. 14.5 - Calculate the [H3O+] of each aqueous solution with...Ch. 14.5 - Prob. 40PPCh. 14.5 - Calculate the [OH] of each aqueous solution with...Ch. 14.5 - Prob. 42PPCh. 14.6 - Prob. 43PPCh. 14.6 - Prob. 44PPCh. 14.6 - State whether each of the following solutions is...Ch. 14.6 - State whether each of the following solutions is...Ch. 14.6 - A solution with a pH of 3 is 10 times more acidic...Ch. 14.6 - A solution with a pH of 10 is 100 times more basic...Ch. 14.6 - Calculate the pH of each solution given the...Ch. 14.6 - Calculate the pOH of each solution given the...Ch. 14.6 - Prob. 51PPCh. 14.6 - Complete the following table:Ch. 14.6 - A patient with severe metabolic acidosis has a...Ch. 14.6 - A patient with respiratory alkalosis has a blood...Ch. 14.7 - Prob. 55PPCh. 14.7 - Prob. 56PPCh. 14.7 - Balance each of the following neutralization...Ch. 14.7 - Balance each of the following neutralization...Ch. 14.7 - Write a balanced equation for the neutralization...Ch. 14.7 - Prob. 60PPCh. 14.8 - If you need to determine the molarity of a formic...Ch. 14.8 - If you need to determine the molarity of an acetic...Ch. 14.8 - Prob. 63PPCh. 14.8 - What is the molarity of an acetic acid solution if...Ch. 14.8 - Prob. 65PPCh. 14.8 - A solution of 0.162MNaOH is used to titrate 25.0mL...Ch. 14.8 - A solution of 0.204MNaOH is used to titrate 50.0mL...Ch. 14.8 - A solution of 0.312 M KOH is used to titrate...Ch. 14.9 - Which of the following make a buffer system when...Ch. 14.9 - Prob. 70PPCh. 14.9 - Consider the buffer system of hydrofluoric acid,...Ch. 14.9 - Consider the buffer system of nitrous acid, HNO2 ,...Ch. 14.9 - Nitrous acid has a Ka of 4.5104 . What is the pH...Ch. 14.9 - Prob. 74PPCh. 14.9 - Using Table 14.4 for Ka values, compare the pH of...Ch. 14.9 - Using Table 14.4 for Ka values, compare the pH of...Ch. 14.9 - Someone with kidney failure excretes urine with...Ch. 14.9 - Someone with severe diabetes obtains energy by the...Ch. 14.9 - Prob. 79PPCh. 14.9 - Prob. 80PPCh. 14.9 - Prob. 81PPCh. 14.9 - After Larry had taken Nexium for 4 weeks, the pH...Ch. 14.9 - Prob. 83PPCh. 14.9 - Prob. 84PPCh. 14.9 - Prob. 85PPCh. 14.9 - Prob. 86PPCh. 14 - The chapter sections to review are shown in...Ch. 14 - Prob. 88UTCCh. 14 - Prob. 89UTCCh. 14 - Prob. 90UTCCh. 14 - Prob. 91UTCCh. 14 - Prob. 92UTCCh. 14 - Prob. 93UTCCh. 14 - Prob. 94UTCCh. 14 - Prob. 95UTCCh. 14 - Prob. 96UTCCh. 14 - The chapter sections to review are shown in...Ch. 14 - Prob. 98APPCh. 14 - Prob. 99APPCh. 14 - Prob. 100APPCh. 14 - Prob. 101APPCh. 14 - The chapter sections to review are shown in...Ch. 14 - Prob. 103APPCh. 14 - Prob. 104APPCh. 14 - Prob. 105APPCh. 14 - Prob. 106APPCh. 14 - Prob. 107APPCh. 14 - Prob. 108APPCh. 14 - Prob. 109APPCh. 14 - Prob. 110APPCh. 14 - Prob. 111APPCh. 14 - Prob. 112APPCh. 14 - Prob. 113APPCh. 14 - Prob. 114APPCh. 14 - Prob. 115CPCh. 14 - Prob. 116CPCh. 14 - Prob. 117CPCh. 14 - Prob. 118CPCh. 14 - Prob. 119CPCh. 14 - Prob. 120CPCh. 14 - Prob. 121CPCh. 14 - The following problems are related to the topics...Ch. 14 - Prob. 123CPCh. 14 - Prob. 124CPCh. 14 - Prob. 125CPCh. 14 - Prob. 126CPCh. 14 - Prob. 127CPCh. 14 - Prob. 128CPCh. 14 - Prob. 129CPCh. 14 - Prob. 130CPCh. 14 - Prob. 21CICh. 14 - Prob. 22CICh. 14 - Prob. 23CiCh. 14 - Prob. 24CiCh. 14 - Prob. 25CICh. 14 - Prob. 26CICh. 14 - Prob. 27CICh. 14 - Prob. 28CiCh. 14 - Prob. 29CICh. 14 - Prob. 30CICh. 14 - Prob. 31CICh. 14 - In the kidneys, the ammonia buffer system buffers...
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- Use Le Chátelier's principle to explain what happens to the equilibrium H2O(l)H+(aq)+OH(aq) when a few drops of HCl are added to pure water.arrow_forwardA 5.36-g sample of NH4Cl was added to 25.0 mL of 1.00 M NaOH and the resulting solution diluted to 0.100 L.. (a) What is the pH of this buffer solution?. (b) Is the solution acidic or basic?. (c) What is the pH of a solution that results when 3.00 mL of 0.034 M HCl is added to the solution?arrow_forwardFollow the directions of Question 64. Consider two beakers: Beaker A has a weak acid(K a=1105). Beaker B has HCI. The volume and molarity of each acid in the beakers are the same. Both acids are to be titrated with a 0.1 M solution of NaOH. (a) Before titration starts (at zero time), the pH of the solution in Beaker A is the pH of the solution in Beaker B. (b) At half-neutralization (halfway to the equivalence point), the pH of the solution in Beaker A the pH of the solution in Beaker B. (c) When each solution has reached its equivalence point, the pH of the solution in Beaker A the pH of the solution in Beaker B. (d) At the equivalence point, the volume of NaOH used to titrate HCI in Beaker B the volume of NaOH used to titrate the weak acid in Beaker A.arrow_forward
- Identify each pair that could form a buffer. (a) HCl and CH3COOH (b) NaH2PO4 and Na2HPO4 (c) H2CO3 and NaHCO3arrow_forwardBriefly describe how a buffer solution can control the pH of a solution when strong acid is added and when strong base is added. Use NH3/NH4Cl as an example of a buffer and HCl and NaOH as the strong acid and strong base.arrow_forwardMost naturally occurring acids are weak acids. Lactic acid is one example. CH3CH(OH)CO2H(s)+H2O(l)H3O+(aq)+CH3CH(OH)CO2(aq) If you place some lactic acid in water, it will ionize to a small extent, and an equilibrium will be established. Suggest some experiments to prow that this is a weak acid and that the establishment of equilibrium is a reversible process.arrow_forward
- Which of the following pairs cannot be used to make a buffer? a. HC2H3O2 and NaOH b. HBr and KBr c. NH3 and NH4Cl d. HF and NaFarrow_forwardWhich pair of aqueous solutions can create a buffer solution if present in the appropriate concentrations? A. HCl and H20 B. HCl and NaOH C. H3PO4 and Na3PO4 D. HF and NaFarrow_forwardCHAPTER 4 - CHEMICAL REACTIONS O Previous Page 47 of 47 Next O A 0.307-g sample of an unknown triprotic acid is titrated to the third equivalence point using 35.2 mL of 0.106 M NAOH. Calculate the molar mass of the acid. O A. 247 g/mol O B. 165 g/mol O C. 171 g/mol D. 151 g/mol O E. 82.7 g/mol Cengage Learning | Cengage Technical Supportarrow_forward
- Consider the buffer system of carbonic acid (H₂CO₂) and its salt, KHCO₂, which provides the conjugate base, HCO,. H_COjlog) + HJO W 7 HyO" loạ) + HCOy loa) How does the buffer react when some base is added? The bicarbonate ion (HCO) of the buffer reacts with the base. OHCO and H₂CO, both react with the base. O The buffer does not react. O The carbonic acid (H₂CO₂) of the buffer reacts with the base Question 15 Indicate whether each of the following reactions is an example of reaction of an acid with a metal, reaction of an acid with a carbonate, or acid-base neutralization reaction using the dropdown on the right. Reaction A: ZnCO3(s) + 2HBr(aq) → ZnBr₂(aq) + CO₂(g) + H₂O(l) Reaction B: Zn(s) + 2HCl(aq) → ZnCl₂(aq) + H₂(g) HCI(g) + NaHCO3(s)→ NaCl(aq) + CO₂(g) + H₂O(0) H₂SO4(aq) + Mg(OH)2(s)→ MgSO4(aq) + 2H₂O(1) 3LIOH(aq) + H₂PO₂(aq) → Li₂PO₂(aq) + 3H₂O(0) Cal(s) + H₂SO4(aq) → H₂(g) + CaSO₂(aq) Reaction C: Reaction D: Reaction E: Reaction Earrow_forwardIs the following solution a buffer? Each solution was prepared by mixing and diluting appropriate quantities of the two solutes to yield the concentrations indicated. 0.10 M NaOH and 0.90 M KOH a.yesb.noarrow_forwardWhich of the following constitute a buffer? A. NH3 and KNO3 B. HCN & NaCN C. HF & NaCl D. NaOH & NaCl Group of answer choices C A & C B A, B and Carrow_forward
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