General Chemistry: Principles and Modern Applications (11th Edition)
11th Edition
ISBN: 9780132931281
Author: Ralph H. Petrucci, F. Geoffrey Herring, Jeffry D. Madura, Carey Bissonnette
Publisher: PEARSON
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Chapter 5, Problem 103SAE
Interpretation Introduction
Interpretation:
The solution containing maximum hydrogen ion concentration needs to be identified.
Concept introduction:
Molarity of a solution is the number of moles of solute present per liter of solution which can be shown as:
Where, n is number of moles
V is volume in liters.
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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.
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X
AP
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Naor
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Chapter 5 Solutions
General Chemistry: Principles and Modern Applications (11th Edition)
Ch. 5 - Using information from this chapter, indicate...Ch. 5 - Select the (a) best and (b) poorest electrical...Ch. 5 - What response would you expect in the apparatus of...Ch. 5 - NH2(aq) conducts electric current only weakly. The...Ch. 5 - Sketches (a-c) are molecular views of the solute...Ch. 5 - Prob. 6ECh. 5 - Determine the concentration of the ion indicated...Ch. 5 - Which solution has the greatest [SO42] ? a....Ch. 5 - A solution is prepared by dissolving...Ch. 5 - Prob. 10E
Ch. 5 - Prob. 11ECh. 5 - Prob. 12ECh. 5 - Which of the following aqueous solutions has the...Ch. 5 - Prob. 14ECh. 5 - Prob. 15ECh. 5 - If 18.2 mL H2O evaporates from 1.00 L of a...Ch. 5 - Prob. 17ECh. 5 - Assuming the volumes are additive, what he [NO3]...Ch. 5 - Complete each of the following as net ionic...Ch. 5 - Prob. 20ECh. 5 - Prob. 21ECh. 5 - Predict in each case whether a reaction is likely...Ch. 5 - What reagent solution might you use to separate...Ch. 5 - Prob. 24ECh. 5 - Prob. 25ECh. 5 - Prob. 26ECh. 5 - Complete each of the following as a net ionic...Ch. 5 - Every antacid one or more ingredients capable of...Ch. 5 - Prob. 29ECh. 5 - Prob. 30ECh. 5 - Which solutions would you use to precipitate Mg24...Ch. 5 - Prob. 32ECh. 5 - Assign oxidation states to the elements involved...Ch. 5 - Explain why these reactions cannot occur as...Ch. 5 - Prob. 35ECh. 5 - Prob. 36ECh. 5 - Balance these equations for redox reactions...Ch. 5 - Balance these equations for redox reactions...Ch. 5 - Balance these equations for redox reactions in...Ch. 5 - Balance these equations for redox reactions...Ch. 5 - Balance these equations for disproportionation...Ch. 5 - Prob. 42ECh. 5 - Prob. 43ECh. 5 - Prob. 44ECh. 5 - The following reactions do not occur in aqueous...Ch. 5 - The reactions do not occur in aqueous solutions....Ch. 5 - What are the oxidizing and reducing agents in the...Ch. 5 - Thiosulfate ion, S2O32 , is a reducing agent can...Ch. 5 - What volume of 0.0962 N NaOH is required to...Ch. 5 - Prob. 50ECh. 5 - Prob. 51ECh. 5 - How many milliliters of 0.0750MBa(OH)2 are...Ch. 5 - An NaOH(aq) solution cannot be made up to an exact...Ch. 5 - Household ammonia, used as a window cleaner and...Ch. 5 - Prob. 55ECh. 5 - Prob. 56ECh. 5 - Prob. 57ECh. 5 - A 7.55 g sample of Na2CO2(s) is added to 125 mL of...Ch. 5 - Prob. 59ECh. 5 - Prob. 60ECh. 5 - Prob. 61ECh. 5 - Prob. 62ECh. 5 - A KMnO4(eq) solution is to be standardized by...Ch. 5 - Prob. 64ECh. 5 - An iron ore sample weighing0.6132 g dissolved...Ch. 5 - The concentration of Mn2+(aq) can be determined by...Ch. 5 - The titration of 5.00 mL of a saturated solution...Ch. 5 - Prob. 68ECh. 5 - Prob. 69IAECh. 5 - Following are some laboratory methods occasionally...Ch. 5 - Prob. 71IAECh. 5 - You have a solution that is 0.0250 M Ba(OH) and...Ch. 5 - Prob. 73IAECh. 5 - Prob. 74IAECh. 5 - Prob. 75IAECh. 5 - An unknown whitesolid consists of two compounds,...Ch. 5 - Balance these equations for reactions in acidic...Ch. 5 - Prob. 78IAECh. 5 - A method of producing phosphine, PH2, from...Ch. 5 - Prob. 80IAECh. 5 - Prob. 81IAECh. 5 - A piece of marble (assume it is pure CaCO2) reacts...Ch. 5 - The reaction below can be used as laboratory...Ch. 5 - Refer to Example 5-10. Suppose that the KMnO4(aq)...Ch. 5 - Prob. 85IAECh. 5 - A 0.4324 g sample of a potassium hydroxidelithium...Ch. 5 - Prob. 87IAECh. 5 - Prob. 88IAECh. 5 - The active ingredients h a particular antacid...Ch. 5 - Prob. 90IAECh. 5 - Prob. 91IAECh. 5 - Copper refining traditionally involves "roasting"...Ch. 5 - Prob. 93IAECh. 5 - Sodium cyclopentadienide, NaC2H2, is a common...Ch. 5 - Manganese is derived from pyrolusiteore, an impure...Ch. 5 - Prob. 96FPCh. 5 - Prob. 97FPCh. 5 - Prob. 98FPCh. 5 - Prob. 99SAECh. 5 - Prob. 100SAECh. 5 - Prob. 101SAECh. 5 - Prob. 102SAECh. 5 - Prob. 103SAECh. 5 - Prob. 104SAECh. 5 - Prob. 105SAECh. 5 - Prob. 106SAECh. 5 - Prob. 107SAECh. 5 - When aqueous sodium carbonate, Na2CO2, is treated...Ch. 5 - Prob. 109SAECh. 5 - Consider the following redox reaction:...Ch. 5 - Balance the following oxidation—reduction...Ch. 5 - Prob. 112SAECh. 5 - What is the simplest ratio a:b when the equation...Ch. 5 - In the half-reaction in which NpO2+ is converted...Ch. 5 - Which list of compounds contains a nonelectrolyte,...Ch. 5 - Prob. 116SAECh. 5 - Which list of compounds contains two soluble...Ch. 5 - Classify each of the blowing statements as true or...Ch. 5 - Which of the following reactions are oxidation-...Ch. 5 - Prob. 120SAECh. 5 - Prob. 121SAE
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