Chemistry for Today: General, Organic, and Biochemistry
9th Edition
ISBN: 9781305960060
Author: Spencer L. Seager, Michael R. Slabaugh, Maren S. Hansen
Publisher: Cengage Learning
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Chapter 7, Problem 7.13E
Interpretation Introduction
Interpretation:
The difference between a nonhydrated ion and a hydrated ion is to be stated. A sketch of the
Concept introduction:
The term soluble is used for a pair of substances that forms a homogenous mixture. A solution involves the hydration of ions. Water is a polar substance and ion contains charge. The water molecule orient itself as its positive pole will face negative ion and negative pole will face positive ion.
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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 7 Solutions
Chemistry for Today: General, Organic, and Biochemistry
Ch. 7 - Many solutions are found in the home. Some are...Ch. 7 - Prob. 7.2ECh. 7 - Classify the following as being a solution or not...Ch. 7 - Classify the following as being a solution or not...Ch. 7 - Use the term soluble, insoluble, or immiscible to...Ch. 7 - Use the term soluble, insoluble, or immiscible to...Ch. 7 - Define the term miscible. It is not defined in the...Ch. 7 - Classify the following solutions as unsaturated,...Ch. 7 - Prob. 7.9ECh. 7 - Prob. 7.10E
Ch. 7 - Prob. 7.11ECh. 7 - Classify each of the following solutes into the...Ch. 7 - Prob. 7.13ECh. 7 - Prob. 7.14ECh. 7 - Prob. 7.15ECh. 7 - Prob. 7.16ECh. 7 - Prob. 7.17ECh. 7 - Prob. 7.18ECh. 7 - Prob. 7.19ECh. 7 - Prob. 7.20ECh. 7 - Prob. 7.21ECh. 7 - Prob. 7.22ECh. 7 - Calculate the molarity of the following solutions:...Ch. 7 - Prob. 7.24ECh. 7 - Prob. 7.25ECh. 7 - Calculate: a. How many grams of solid would be...Ch. 7 - Prob. 7.27ECh. 7 - Prob. 7.28ECh. 7 - Calculate the concentration in (w/w) of the...Ch. 7 - Calculate the concentration in (w/w) of the...Ch. 7 - Prob. 7.31ECh. 7 - Calculate the concentration in (w/w) of the...Ch. 7 - Prob. 7.33ECh. 7 - Calculate the concentration in (v/v) of the...Ch. 7 - Calculate the concentration in (v/v) of the...Ch. 7 - Consider the blood volume of an adult to be 5.0L....Ch. 7 - Prob. 7.37ECh. 7 - Calculate the concentration in (w/v) of the...Ch. 7 - Calculate the concentration in (w/v) of the...Ch. 7 - Prob. 7.40ECh. 7 - Prob. 7.41ECh. 7 - Prob. 7.42ECh. 7 - Explain how you would prepare the following...Ch. 7 - Prob. 7.44ECh. 7 - Prob. 7.45ECh. 7 - Calculate the following: a. The number of grams of...Ch. 7 - Prob. 7.47ECh. 7 - Explain how you would prepare the following dilute...Ch. 7 - Prob. 7.49ECh. 7 - Prob. 7.50ECh. 7 - Prob. 7.51ECh. 7 - How many grams of solid Na2CO3 will react with...Ch. 7 - Prob. 7.53ECh. 7 - Prob. 7.54ECh. 7 - Prob. 7.55ECh. 7 - Prob. 7.56ECh. 7 - How many milliliters of 0.124MNaOH solution will...Ch. 7 - How many milliliters of 0.124MNaOH solution will...Ch. 7 - How many milliliters of 0.115MNaOH solution will...Ch. 7 - Stomach acid is essentially 0.10MHCl. An active...Ch. 7 - Prob. 7.61ECh. 7 - Prob. 7.62ECh. 7 - Prob. 7.63ECh. 7 - Calculate the boiling and freezing points of water...Ch. 7 - Calculate the boiling and freezing points of water...Ch. 7 - Prob. 7.66ECh. 7 - Prob. 7.67ECh. 7 - Prob. 7.68ECh. 7 - Calculate the osmolarity for the following...Ch. 7 - Prob. 7.70ECh. 7 - Calculate the osmotic pressure of a 0.125M...Ch. 7 - Prob. 7.72ECh. 7 - Prob. 7.73ECh. 7 - Calculate the osmotic pressure of a solution that...Ch. 7 - Prob. 7.75ECh. 7 - Prob. 7.77ECh. 7 - Prob. 7.78ECh. 7 - Prob. 7.79ECh. 7 - Suppose an osmotic membrane separates a 5.00 sugar...Ch. 7 - Prob. 7.81ECh. 7 - Prob. 7.82ECh. 7 - Suppose you have a bag made of a membrane like...Ch. 7 - Prob. 7.84ECh. 7 - Prob. 7.85ECh. 7 - Prob. 7.86ECh. 7 - Prob. 7.87ECh. 7 - Prob. 7.88ECh. 7 - Prob. 7.89ECh. 7 - When a patient has blood cleansed by hemodialysis,...Ch. 7 - Prob. 7.91ECh. 7 - Prob. 7.92ECh. 7 - Prob. 7.93ECh. 7 - Prob. 7.94ECh. 7 - Prob. 7.95ECh. 7 - Strips of fresh meat can be preserved by drying....Ch. 7 - If a salt is added to water, which of the...Ch. 7 - Prob. 7.98ECh. 7 - Prob. 7.99ECh. 7 - Prob. 7.100ECh. 7 - Which one of the following compounds is a...Ch. 7 - Prob. 7.102ECh. 7 - Prob. 7.103ECh. 7 - Prob. 7.104ECh. 7 - Prob. 7.105ECh. 7 - Prob. 7.106ECh. 7 - Prob. 7.107ECh. 7 - Prob. 7.108ECh. 7 - Prob. 7.109ECh. 7 - Prob. 7.110ECh. 7 - In a dilute solution of sodium chloride in water,...Ch. 7 - A salt solution has a molarity of 1.5M. How many...Ch. 7 - Prob. 7.113ECh. 7 - Prob. 7.114ECh. 7 - Prob. 7.115ECh. 7 - Prob. 7.116ECh. 7 - Prob. 7.117ECh. 7 - Prob. 7.118ECh. 7 - Prob. 7.119ECh. 7 - Prob. 7.120ECh. 7 - Prob. 7.121ECh. 7 - Prob. 7.122E
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