Chemistry: Structure and Properties
1st Edition
ISBN: 9780321834683
Author: Nivaldo J. Tro
Publisher: PEARSON
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Chapter 14, Problem 53E
Interpretation Introduction
To Determine:
The amount of water present (in grams) contains 1.2g of Ca.
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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 14 Solutions
Chemistry: Structure and Properties
Ch. 14 - Which compound is most soluble in octane (C8H18)?...Ch. 14 - Prob. 2SAQCh. 14 - A 500.0-mL sample of pure water is allowed to come...Ch. 14 - Prob. 4SAQCh. 14 - Prob. 5SAQCh. 14 - Prob. 6SAQCh. 14 - What is the vapor pressure of an aqueous ethylene...Ch. 14 - Prob. 8SAQCh. 14 - What mass of glucose (C6H12O6) should you dissolve...Ch. 14 - Which aqueous solution has the highest boiling...
Ch. 14 - The osmotic pressure of a solution containing 22.7...Ch. 14 - The enthalpy of solution for NaOH is -44.6 kJ/mol....Ch. 14 - A 2.4-m aqueous solution of an ionic compound with...Ch. 14 - A solution is an equimolar mixture of two volatile...Ch. 14 - An aqueous solution is in equilibrium with a...Ch. 14 - What is a solution? What are the solute and...Ch. 14 - What does it mean when we say that a substance is...Ch. 14 - Why do two ideal gases thoroughly mix when...Ch. 14 - Prob. 4ECh. 14 - Prob. 5ECh. 14 - Explain how the relative strengths of...Ch. 14 - What does the statement like dissolves like mean...Ch. 14 - Prob. 8ECh. 14 - What is the heat of hydration(Hhydration)? How...Ch. 14 - Prob. 10ECh. 14 - How does temperature affect the solubility of a...Ch. 14 - Prob. 12ECh. 14 - How does pressure affect the solubility of a gas...Ch. 14 - What is Henry’s law? For what kinds of...Ch. 14 - Prob. 15ECh. 14 - How are parts by mass and parts by volume used in...Ch. 14 - Prob. 17ECh. 14 - What is Raoult’s law? For what kind of...Ch. 14 - Explain the difference between an ideal and a...Ch. 14 - Prob. 20ECh. 14 - Prob. 21ECh. 14 - What are colligative properties?Ch. 14 - Prob. 23ECh. 14 - Explain the significance of the van’t Hoff factor...Ch. 14 - Prob. 25ECh. 14 - Pick an appropriate solvent from Table 13.3 to...Ch. 14 - Which molecule would you expect to be more soluble...Ch. 14 - Prob. 28ECh. 14 - Prob. 29ECh. 14 - Prob. 30ECh. 14 - When ammonium chloride (NH4Cl) is dissolved in...Ch. 14 - Prob. 32ECh. 14 - Prob. 33ECh. 14 - Use the given data to calculate the heats of...Ch. 14 - Lithium iodide has a lattice energy of...Ch. 14 - Prob. 36ECh. 14 - A solution contains 25 g of NaCl per 100.0 g of...Ch. 14 - A solution contains 32 g of KNO3 per 100.0 g of...Ch. 14 - Prob. 39ECh. 14 - A KCI solution containing 42 g of KCI per 100.0 g...Ch. 14 - Some laboratory procedures involving...Ch. 14 - A person preparing a fish tank fills the tank with...Ch. 14 - Prob. 43ECh. 14 - Scuba divers breathing air at increased pressure...Ch. 14 - Calculate the mass of nitrogen dissolved at room...Ch. 14 - Use Henry’s law to determine the molar solubility...Ch. 14 - An aqueous NaCl solution is made using 112 g of...Ch. 14 - Prob. 48ECh. 14 - To what volume should you dilute 50.0 mL of a...Ch. 14 - Prob. 50ECh. 14 - Silver nitrate solutions are used to plate silver...Ch. 14 - Prob. 52ECh. 14 - Prob. 53ECh. 14 - Prob. 54ECh. 14 - You can purchase nitric acid in a concentrated...Ch. 14 - You can purchase hydrochloric acid in a...Ch. 14 - Prob. 57ECh. 14 - Prob. 58ECh. 14 - Prob. 59ECh. 14 - Prob. 60ECh. 14 - Prob. 61ECh. 14 - Prob. 62ECh. 14 - Prob. 63ECh. 14 - Prob. 64ECh. 14 - A beaker contains 100.0 mL of pure water. A second...Ch. 14 - Which solution has the highest vapor pressure? a....Ch. 14 - Calculate the vapor pressure of a solution...Ch. 14 - A solution contains naphthalene (C10H8) dissolved...Ch. 14 - A solution contains 50.0 g of heptane (C7H16) and...Ch. 14 - A solution contains a mixture of pentane and...Ch. 14 - A solution contains 4.08 g of chloroform (C3H8O3)...Ch. 14 - A solution of methanol and water has a mole...Ch. 14 - Prob. 73ECh. 14 - An ethylene glycol solution contains 21.2 g of...Ch. 14 - Calculate the freezing point and melting point of...Ch. 14 - Calculate the freezing point and melting point of...Ch. 14 - An aqueous solution containing 17.5 g of an...Ch. 14 - An aqueous solution containing 35.9 g of an...Ch. 14 - Calculate the osmotic pressure of a solution...Ch. 14 - Prob. 80ECh. 14 - A solution containing 27.55 mg of an unknown...Ch. 14 - Prob. 82ECh. 14 - Calculate the freezing point and boiling point...Ch. 14 - Calculate the freezing point and boiling point in...Ch. 14 - What mass of salt (NaCl) should you add to 1.00 L...Ch. 14 - Prob. 86ECh. 14 - Use the van’t Hoff factors in Table 13.7 to...Ch. 14 - Prob. 88ECh. 14 - A 1.2-m aqueous solution of an ionic compound with...Ch. 14 - A 0.95-m aqueous solution of an ionic compound...Ch. 14 - Prob. 91ECh. 14 - Prob. 92ECh. 14 - Prob. 93ECh. 14 - An aqueous CaCl2 solution has a vapor pressure of...Ch. 14 - Prob. 95ECh. 14 - Prob. 96ECh. 14 - Potassium perchlorate (KClO4) has a lattice energy...Ch. 14 - Sodium hydroxide (NaOH) has a lattice energy of...Ch. 14 - Prob. 99ECh. 14 - Prob. 100ECh. 14 - Prob. 101ECh. 14 - Water softeners often replace calcium ions in hard...Ch. 14 - Prob. 103ECh. 14 - Prob. 104ECh. 14 - Prob. 105ECh. 14 - Prob. 106ECh. 14 - An isotonic solution contains 0.90% NaCl mass to...Ch. 14 - Prob. 108ECh. 14 - Prob. 109ECh. 14 - When HNO2 dissolves in water, it partially...Ch. 14 - Prob. 111ECh. 14 - Prob. 112ECh. 14 - Prob. 113ECh. 14 - Distillation is a method of purification based on...Ch. 14 - Prob. 115ECh. 14 - Find the mass of urea (CH4N2O) needed to prepare...Ch. 14 - A solution contains 10.05 g of unknown compound...Ch. 14 - Prob. 118ECh. 14 - Prob. 119ECh. 14 - Prob. 120ECh. 14 - The small bubbles that form on the bottom of a...Ch. 14 - The vapor above a mixture of pentane and hexane at...Ch. 14 - A 1.10-g sample contains only glucose (C6H12O6)...Ch. 14 - Prob. 124ECh. 14 - Two alcohols, isopropyl alcohol and propyl...Ch. 14 - A metal, M, of atomic mass 96 amu reacts with...Ch. 14 - Prob. 127ECh. 14 - Prob. 128ECh. 14 - A solution is prepared by dissolving 11.60 g of a...Ch. 14 - Substance A is a nonpolar liquid and has only...Ch. 14 - Prob. 131ECh. 14 - Prob. 132ECh. 14 - Prob. 133ECh. 14 - Prob. 134E
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