CHEMISTRY-TEXT
8th Edition
ISBN: 9780134856230
Author: Robinson
Publisher: PEARSON
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Chapter 16, Problem 16.15P
Calculate the pH of the following solutions:
(a)
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Using the conditions of spontaneity to deduce the signs of AH and AS
Use the observations about each chemical reaction in the table below to decide the sign (positive or negative) of the reaction enthalpy AH and reaction entropy
AS.
Note: if you have not been given enough information to decide a sign, select the "unknown" option.
reaction
observations
conclusions
A
This reaction is always spontaneous, but
proceeds slower at temperatures above
120. °C.
ΔΗ is
(pick one)
AS is
(pick one)
ΔΗ is
(pick one)
B
This reaction is spontaneous except above
117. °C.
AS is
(pick one)
ΔΗ is
(pick one)
This reaction is slower below 20. °C than
C
above.
AS is
|(pick one)
?
18
Ar
1
Calculating the pH at equivalence of a titration
Try Again
Your answer is incorrect.
0/5
a
A chemist titrates 70.0 mL of a 0.7089 M hydrocyanic acid (HCN) solution with 0.4574M KOH solution at 25 °C. Calculate the pH at equivalence. The pK of
hydrocyanic acid is 9.21.
Round your answer to 2 decimal places.
Note for advanced students: you may assume the total volume of the solution equals the initial volume plus the volume of KOH solution added.
pH
=
11.43]
G
00.
18
Ar
B•
Biological Macromolecules
Naming and drawing the products of aldose oxidation and reduction
aw a Fischer projection of the molecule that would produce L-ribonic acid if it were subjected to mildly oxidizing reaction conditions.
Click and drag to start drawing a
structure.
X
AP
‡
1/5
Naor
Explanation
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Chapter 16 Solutions
CHEMISTRY-TEXT
Ch. 16 - Write a balanced equation for the dissociation of...Ch. 16 - Write the reaction between the carbonate ion...Ch. 16 - Conceptual PRACTICE 15.3 For the following...Ch. 16 - Conceptual APPLY 15.4 For the following reactions...Ch. 16 - If you mix equal concentrations of reactants and...Ch. 16 - Conceptual APPLY 15.6 The following pictures...Ch. 16 - Which pair has the stronger acid listed first? H2S...Ch. 16 - Which acid is stronger, H3PO4orH3AsO4?Ch. 16 - PRACTICE 15.9 The concentration of H3O+ ions in...Ch. 16 - Calculate the pH of a sample of seawater that has...
Ch. 16 - During mining operations, the mineral pyrite...Ch. 16 - Calculate the concentrations of H3O+ and OH- in a...Ch. 16 - Calculate the pH of the following solutions: (a)...Ch. 16 - Calculate the pH of a solution prepared by...Ch. 16 - The following pictures represent aqueous solutions...Ch. 16 - Acetic acid, CH3CO2H, is the solute that gives...Ch. 16 - Wha concentration of formic acid will result in a...Ch. 16 - Calculate the pH and the concentration of all...Ch. 16 - Carbonated drinks are prepared by dissolving CO2...Ch. 16 - Calculate the pH and the concentrations of all...Ch. 16 - Lactated Ringers solution is given intravenously...Ch. 16 - Prob. 16.25PCh. 16 - The following pictures represent aqueous solutions...Ch. 16 - Predict whether a solution of 0.20 M NaNO2 is...Ch. 16 - Calculate the pH and percent dissociation of...Ch. 16 - Prob. 16.29PCh. 16 - For the following Lewis acid— base reaction, draw...Ch. 16 - What are the chemical formulas and names of the...Ch. 16 - What were the average pH ranges for rainfall in...Ch. 16 - Prob. 16.33PCh. 16 - (a) Natural or “unpolluted” rain has a pH of 5.6....Ch. 16 - Prob. 16.35PCh. 16 - Prob. 16.36PCh. 16 - Because sulfur and nitrogen oxides are the main...Ch. 16 - Prob. 16.38CPCh. 16 - The following pictures represent aqueous solutions...Ch. 16 - Locate sulfur, selenium, chlorine, and bromine in...Ch. 16 - Prob. 16.41CPCh. 16 - Prob. 16.42CPCh. 16 - The followign pictures represent solutions of...Ch. 16 - Prob. 16.44CPCh. 16 - Look at the electron-dot structures of the...Ch. 16 - Boric acid (H3BO3) is a weak monoprotic acid that...Ch. 16 - Prob. 16.47CPCh. 16 - Prob. 16.48SPCh. 16 - Which of the following can behave both as a...Ch. 16 - Give the formula for the conjugate base of each of...Ch. 16 - Give the formula for the conjugate acid of each of...Ch. 16 - For each of the following reactions, identify the...Ch. 16 - For each of the following reactions, identify the...Ch. 16 - Aqueous solutions of hydrogen sulfide contain...Ch. 16 - Prob. 16.55SPCh. 16 - Choose from the conjugate acid-base pairs...Ch. 16 - Prob. 16.57SPCh. 16 - Prob. 16.58SPCh. 16 - Prob. 16.59SPCh. 16 - Arrange each group of compounds in order of...Ch. 16 - Arrange each group of compounds in order of...Ch. 16 - Prob. 16.62SPCh. 16 - Identify the weakest acid in each of the following...Ch. 16 - Prob. 16.64SPCh. 16 - Identify the stronger base in each of the...Ch. 16 - Prob. 16.66SPCh. 16 - Prob. 16.67SPCh. 16 - The concentration of OH- in a sample of seawater...Ch. 16 - The concentration of OH- in human blood is...Ch. 16 - For each of the following solutions, calculate...Ch. 16 - For each of the following solutions, calculate...Ch. 16 - Water superheated under pressure to 200oC and 750...Ch. 16 - Water at 500oC and 250 atm is a supercritical...Ch. 16 - Calculate the pH to the correct number of...Ch. 16 - Calculate the pH to the correct number of...Ch. 16 - Calculate the H3O+ concentration to the correct...Ch. 16 - Calculate the H3O+ concentration to the correct...Ch. 16 - Prob. 16.78SPCh. 16 - Which of the indicators given in Figure 16.5,...Ch. 16 - Which of the following species behave a strong...Ch. 16 - Which of the following species behave as strong...Ch. 16 - Calculate the pH of the following solutions:...Ch. 16 - Calculate the pH of the following solutions: 0.48...Ch. 16 - Prob. 16.84SPCh. 16 - Calculate the pH of solutions prepared by: RAN (a)...Ch. 16 - How many grams of CaO should be dissolved in...Ch. 16 - Prob. 16.87SPCh. 16 - Look up the value of Ka in Appendix C for...Ch. 16 - Look up the value of Ka in Appendix C for...Ch. 16 - The pH of 0.040 M hypobromous acid (HOBr) is 5.05....Ch. 16 - Lactic acid (C3H6O3) , which occurs in sour milk...Ch. 16 - The pH of 0.050 M gallic acid, an acid found in...Ch. 16 - The pH of 0.040 M pyruvic acid, an acid found in...Ch. 16 - A vitamin C tablet containing 250 mg of ascorbic...Ch. 16 - Acetic acid (CH3COOH;Ka=1.810-5) has a...Ch. 16 - Acrylic acid (HC3H3O2) is used in the manufacture...Ch. 16 - Hippuric acid (HC9H8NO3) , found in horse urine,...Ch. 16 - Calculat the pH and the percent dissociation in...Ch. 16 - A typical aspirin tablet contains 324 mg of...Ch. 16 - Prob. 16.100SPCh. 16 - Calculate the percent dissociation of...Ch. 16 - Write balanced net ionic equations and the...Ch. 16 - Write balanced net ionic equations and the...Ch. 16 - Calculate the pH and the concentrations of all...Ch. 16 - Prob. 16.105SPCh. 16 - Prob. 16.106SPCh. 16 - Tartaric acid (C4H6O6) is a diprotic acid that...Ch. 16 - Like sulfuric acid, selenic acid (H2SeO4) is a...Ch. 16 - Calculate the concentrations of H3O+ and SO42- in...Ch. 16 - Prob. 16.110SPCh. 16 - Prob. 16.111SPCh. 16 - Write a balanced net ionic equation and the...Ch. 16 - Write a balanced net ionic equation and the...Ch. 16 - Styrchine (C21H22N2O2) , a deadly poison used for...Ch. 16 - What is the pH of 0.5 M ammonia (NH3)?(Kb=1.8105)Ch. 16 - Morphine (C17H19NO3), a narcotic used in...Ch. 16 - A 1.00103M solution of quinine, a drug used in...Ch. 16 - Oxycodone (C18H21NO4), a narcotic analgesic, is a...Ch. 16 - Morpholine (C4H9NO) is a weak organic base with...Ch. 16 - Using values of Kb in Appendix C, calculate values...Ch. 16 - Using values of Ka in Appendix C, calculate values...Ch. 16 - Prob. 16.122SPCh. 16 - Sodium benzoate (C6H5CO2Na) is used as a food...Ch. 16 - Write a balanced net ionic equation for the...Ch. 16 - Write a balanced net ioflk equation for the...Ch. 16 - Classify each of the following ions according to...Ch. 16 - Classify each of the following salt solutions as...Ch. 16 - Calculate the concentrations of all species...Ch. 16 - Prob. 16.129SPCh. 16 - Calculate Ka for the cation Kb for the anion in an...Ch. 16 - Classify each of the following salt solutions as...Ch. 16 - Prob. 16.132SPCh. 16 - Classify each of the following salt solutions as...Ch. 16 - Calculate the pH and the concentrations of all...Ch. 16 - Calculate the pH and the percent dissociation of...Ch. 16 - Prob. 16.136SPCh. 16 - Prob. 16.137SPCh. 16 - Prob. 16.138SPCh. 16 - For each of the following reactions, identify the...Ch. 16 - Prob. 16.140SPCh. 16 - For each of the Lewis acid—base reactions in...Ch. 16 - Prob. 16.142SPCh. 16 - Prob. 16.143SPCh. 16 - Prob. 16.144MPCh. 16 - Prob. 16.145MPCh. 16 - Prob. 16.146MPCh. 16 - Prob. 16.147MPCh. 16 - Normal rain has a pH of 5.6 due to dissolved...Ch. 16 - Sulfur dioxide is quite soluble in water:...Ch. 16 - Prob. 16.150MPCh. 16 - Acid and base behavior can be observed in solvents...Ch. 16 - Prob. 16.152MPCh. 16 - In the case of very weak acids, [H3O+] from the...Ch. 16 - Prob. 16.154MPCh. 16 - Prob. 16.155MPCh. 16 - Neutralization reactions involving either a strong...Ch. 16 - Prob. 16.157MPCh. 16 - Prob. 16.158MPCh. 16 - A 200.0 mL sample of 0.350 M acetic acid (CH3CO2H)...Ch. 16 - Prob. 16.160MP
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