Basic Chemistry
6th Edition
ISBN: 9780134878119
Author: Timberlake, Karen C. , William
Publisher: Pearson,
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Chapter 14.8, Problem 66PP
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A chemist titrates a 25.0 mL sample of 0.239 M benzoic acid (C6H5COOH) against a 0.100 M solution of NaOH.The overall reaction is shown by the equation below:
C6H5COOH(aq)+NaOH(aq)C6H5COONa(aq)+H2O(l)
The Ka value for benzoic acid is 6.28 × 10–5. Calculate the pH at the start of the titration, before any NaOH has been added. Give your answer correctly to two places after the decimal.
8 mL milk sample was titrated with 0.2 N NaOH by spending 3.2 mL. Calculate the% total acidity in milk in terms of lactic acid. (mEq: 0.09 (milli-equivalent gram of lactic acid found in milk). Convert the% total acidity in terms of lactic acid to total acidity in terms of citric acid. (1 lactic acid = 0.711 citric acid)
Acetic Acid reacts with sodium hydroxide in the following fashion:CH_3COOH(aq)+NaOH(aq) > H2O(l)+NaC2H3O2(aq)
If 3.60mL of vinegar needs 41.0mL of 0.150M NaOH to reach the equivalence point in a titration how many grams of acetic acid are in a 1.50 qt sample of this vinegar?
Express your answer using three significant figures
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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- Consider the equilibration of a weak base B (K, = 7.63 × 10¬³) between water (phase 1) and benzene (phase 2). %3D Which expression represents D, the distribution ratio? B Which expression represents KD, the distribution represents the unprotonated form of the base and BH+ constant? B represents the unprotonated form of the base represents the protonated form of the base. O [B]2 [B]] and BH† represents the protonated form of the base. [B]2 [B]] + [BH*]] [BH*]2 [BH*]2 [BH+]1 [B]] + [BH*]1 [BH*]2 [BH*]] [B]2 [B]] + [BH*]] [BH*]2 [B]2 [B]] + [BH*]] [B]] Calculate D at pH 8.41 if Kp = 49.0. Will D be larger or smaller at pH 6.00 than at pH 8.41? %3D smallerarrow_forward1) A 10mL solution of 3M HCI is diluted to 50mL. What is the concentration of the 50mL solution? 2)In Beer’s law (A=abc), what corresponds to y,m,x and b in the equation of a line (y-mx + b)? Note that b is not the same in the two equations. 3)You have two solutions containing the same compound having the same pink color. The concentration of the first solution is 2.0M, while the concentration of the other solution is 2.5M. Absorbance of each solution was measured with the same spectrophotometer at the same wavelength. a) Which solution has the more intense pink color? b) Which solution has the higher absorbance?arrow_forwardAcetic acid is a weak acid. Its formula is CH3COOH. Only the last H is an acid proton. Vinegar is usually 5 % (v/v) acetic acid. If 25.00 mL of vinegar is titrated by a standardized 0.9315 M NaOH solution, it takes 22.38 mL to reach the endpoint. Calculate the molarity of acetic acid in the 5 % (v/v) vinegar.arrow_forward
- 1. Students were responsible for conducting 3 trials of titration of 10 mL samples of phosphoric acid, H3PO4, with volumes of a 2.0 molar (mol/L) sodium hydroxide, NaOH, solution. What is the concentration of the phosphoric acid solution using the results that were obtained? K Given: H₂PO4(aq) + 3NaOH(aq) - Na3PO4(aq) + 3H₂O(1) Initial Buret Reading (mL) Final Buret Reading (mL) Volume Base Added (mL) 2 => Na Mg Rb Sr 2.92 M Cs Ba 0.55 M 1.21 M Be 0.97 M 1.76 M Ca Sc 3.11 M Ra La 91 AM Hf Ac Trial 1 0.3 14.2 TI Zr Nb Mo Tc [81 $4 Cr Mn Fe Re Os Rf Db Sg Bh Hs Periodic Table of the Elements T Trial 2 14.2 A Basic D 30.0 Symbol 10 77 78 224, Co Ni Cu Zn Ga B 14 Neble Gas Trial 3 30.0 43.9 Ru Rh Pd Ag Cd In Sn Sb Te M с N Expe 201 VIA Sm Nd Pm Eu Gd Dy Ho "Th Pa U Np Pu Am Cm Bk Cf Es Fm Md No Lr 15 VIA M He Ge As Se Br Kr Xe Pt Au Hg Ds Rg Cn Uut FI Uup Lv Uus Uuo Ne "Er Tm Ybarrow_forwardA certain indicator, HA, has a ?a value of 7.9×10^−7. The protonated form of the indicator is yellow and the ionized form is red. What is the p?a of the indicator? p?a= A generic salt, AB2, has a molar mass of 287g/mol and a solubility of 2.80 g/L at 25 °C. AB2(s)↽−−⇀A2+(aq)+2B−(aq) What is the ?sp of this salt at 25 °C? ?sp=arrow_forwardA 10.00 mL sample of 1.20 M HNO2 (analyte) (pK, = 3.34 and K = 4.57x104) is titrated with 1.20 M NaOH (titrant), what is the pH when 5.00 mL of NaOH are added to the analyte? Question 4 A 10.00 mL sample of 1.20 M HNO2 (analyte) (pK, = 3.34 and K, -4.57x104) is titrated with 1.20 M NaOH (titrant), what is the pH when 10.00 mL of NaOH are added to the analyte? Assume Ku = 1.0 x 10-14 Using the titration curve below for the titration of 10.00 mL of the analyte NH3 with HCl(aq) (titrant) to estimate pKa for NH3 Titration of 10.00 mL Ammonia (ag) with Hydrochloric Acid (ag) 12.0 11.0 10.0 9.0 8.0 7.0 5.0 4.0 3.0 2.0 1.0 0.0 0.0 2.0 4.0 10.0 12.0 140 16.0 180 20.0 6.0 Volume of HCI Added (mL) 8.0arrow_forward
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Introduction to Titrimetric analysis; Author: Vidya-mitra;https://www.youtube.com/watch?v=uykGVfn9q24;License: Standard Youtube License