LCPO CHEMISTRY W/MODIFIED MASTERING
8th Edition
ISBN: 9780135214756
Author: Robinson
Publisher: PEARSON
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Chapter 13, Problem 13.94SP
What is the freezing point in °C of a solution prepared by dissolving 7.40 g of
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Calculating the pH at equivalence of a titration
A chemist titrates 210.0 mL of a 0.1003 M hydrobromic acid (HBr) solution with 0.7550M KOH solution at 25 °C. Calculate the pH at equivalence.
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 = ]
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18
Ar
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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
Chapter 13 Solutions
LCPO CHEMISTRY W/MODIFIED MASTERING
Ch. 13 - Prob. 13.1PCh. 13 - Prob. 13.2ACh. 13 - Prob. 13.3PCh. 13 - Prob. 13.4ACh. 13 - PRACTICE 12.5 A 50.0 mL sample of drinking water...Ch. 13 - APPLY 12.6 The legal limit for human exposure to...Ch. 13 - PRACTICE 12.7 What mass in grams of a 0.500 m...Ch. 13 - APPLY 12.8 What is the molality of a solution...Ch. 13 - PRACTICE 12.9 The density at 20°C of a 0.500 M...Ch. 13 - APPLY 12.10 The density at 20°C of a 0.258 m...
Ch. 13 - ThesolubilityofCO2inwateris 3.2102 M at 25 °C...Ch. 13 - APPLY 12.12 Use the Henry’s law constant you...Ch. 13 - PRACTICE 12.13 What is the vapor pressure in mm Hg...Ch. 13 - APPLY 12.14 A solution made by dissolving 8.110 g...Ch. 13 - PRACTICE 12.17 What is the vapor pressure of the...Ch. 13 - Conceptual APPLY 12.18 The following diagram shows...Ch. 13 - What is the normal boiling point in °C of an...Ch. 13 - APPLY 12.20 The following phase diagram shows a...Ch. 13 - Prob. 13.19PCh. 13 - APPLY 12.22 Cells in the human eye have an osmotic...Ch. 13 - PRACTICE 12.23 A solution prepared by dissolving...Ch. 13 - Prob. 13.22ACh. 13 - PROBLEM 12.25 What is the difference between a...Ch. 13 - PROBLEM 12.26 Urea has a high solubility in blood...Ch. 13 - Use Table 13.5 to calculate the osmotic pressure...Ch. 13 - Prob. 13.26PCh. 13 - Many people take vitamin supplements to promote...Ch. 13 - Prob. 13.28CPCh. 13 - Prob. 13.29CPCh. 13 - Prob. 13.30CPCh. 13 - Prob. 13.31CPCh. 13 - Prob. 13.32CPCh. 13 - Prob. 13.33CPCh. 13 - Prob. 13.34CPCh. 13 - Prob. 13.35CPCh. 13 - Prob. 13.36SPCh. 13 - 12.41 Why do ionic substances with higher lattice...Ch. 13 - Prob. 13.38SPCh. 13 - Prob. 13.39SPCh. 13 - Classify the strongest type of intermolecular...Ch. 13 - Classify the strongest type of intermolecular...Ch. 13 - Prob. 13.42SPCh. 13 - Prob. 13.43SPCh. 13 - Br2 is much more soluble in tetrachloromethane,...Ch. 13 - Predict whether the solubility of formaldehyde,...Ch. 13 - Prob. 13.46SPCh. 13 - Prob. 13.47SPCh. 13 - Arrange the following compounds in order of their...Ch. 13 - Prob. 13.49SPCh. 13 - Prob. 13.50SPCh. 13 - Prob. 13.51SPCh. 13 - Prob. 13.52SPCh. 13 - Prob. 13.53SPCh. 13 - The dissolution of CaCl2(s) in water is...Ch. 13 - The dissolution of NH4ClO4(s) in water is...Ch. 13 - Assuming that seawater is an aqueous solution of...Ch. 13 - Prob. 13.57SPCh. 13 - Propranolol°C16H21NO2) a so-called beta-blocker...Ch. 13 - Prob. 13.59SPCh. 13 - How would you prepare each of the following...Ch. 13 - Prob. 13.61SPCh. 13 - Prob. 13.62SPCh. 13 - Prob. 13.63SPCh. 13 - Prob. 13.64SPCh. 13 - Which of the following solutions has the higher...Ch. 13 - What is the mass percent concentration of the...Ch. 13 - Prob. 13.67SPCh. 13 - Prob. 13.68SPCh. 13 - Prob. 13.69SPCh. 13 - What is the concentration of each of the following...Ch. 13 - Prob. 13.71SPCh. 13 - The density of a 16.0 mass % solution of sulfuric...Ch. 13 - Prob. 13.73SPCh. 13 - What is the molality of the 40.0 mass % ethylene...Ch. 13 - Prob. 13.75SPCh. 13 - Prob. 13.76SPCh. 13 - Prob. 13.77SPCh. 13 - Prob. 13.78SPCh. 13 - Prob. 13.79SPCh. 13 - Look at the solubility graph in Figure 13.7, and...Ch. 13 - Prob. 13.81SPCh. 13 - Prob. 13.82SPCh. 13 - Prob. 13.83SPCh. 13 - Fish generally need an O2 concentration in water...Ch. 13 - At an altitude of 10, 000 ft, the partial pressure...Ch. 13 - Prob. 13.86SPCh. 13 - Prob. 13.87SPCh. 13 - Prob. 13.88SPCh. 13 - When solid CaCl2 is added to liquid water, the...Ch. 13 - Rank the following aqueous solutions from lowest...Ch. 13 - Which of the following aqueous solutions has the...Ch. 13 - What is the vapor pressure in mm Hg of a solution...Ch. 13 - What is the normal boiling point in oC of a...Ch. 13 - What is the freezing point in °C of a solution...Ch. 13 - Assuming complete dissociation, what is the...Ch. 13 - When 9.12 g of HCI was dissolved in 190 g of...Ch. 13 - Prob. 13.97SPCh. 13 - When 1 mol of NaCI is added to 1 L of water, the...Ch. 13 - Prob. 13.99SPCh. 13 - Draw a phase diagram showing how the phase...Ch. 13 - Prob. 13.101SPCh. 13 - What is the vapor pressure in mm Hg of the...Ch. 13 - What is the vapor pressure in mm Hg of a solution...Ch. 13 - What is the boiling point in oC of each of the...Ch. 13 - What is the freezing point in oC of each of the...Ch. 13 - Prob. 13.106SPCh. 13 - The van’t Hoff factor for KCl is i=1.85. What is...Ch. 13 - Hepatane (C7H16) and octane (C8H18) are...Ch. 13 - Prob. 13.109SPCh. 13 - Acetone, C3H6O , and ethyl acetate, C4H8O2, are...Ch. 13 - Prob. 13.111SPCh. 13 - Prob. 13.112SPCh. 13 - What is the mole fraction of each component in the...Ch. 13 - Prob. 13.114SPCh. 13 - A solution prepared by dissolving 3.00 g of...Ch. 13 - Prob. 13.116SPCh. 13 - Prob. 13.117SPCh. 13 - Prob. 13.118SPCh. 13 - What osmotic presure in mm Hg would you expect for...Ch. 13 - Prob. 13.120SPCh. 13 - Prob. 13.121SPCh. 13 - Prob. 13.122SPCh. 13 - If cost per gram were not a concern, which of the...Ch. 13 - Prob. 13.124SPCh. 13 - Met-enkephalin is one of the so-called endorphins,...Ch. 13 - Prob. 13.126SPCh. 13 - Prob. 13.127SPCh. 13 - Prob. 13.128SPCh. 13 - Prob. 13.129SPCh. 13 - How many grams of naphthalene, C10H8 (commonly...Ch. 13 - Prob. 13.131SPCh. 13 - Assuming that seawater is a 3.5 mass % solution of...Ch. 13 - There’s actually much more in seawater than just...Ch. 13 - Prob. 13.134SPCh. 13 - What is the van’t Hoff factor for K2SO4 in an...Ch. 13 - If the van’t Hoff factor for Lid in a 0.62 m...Ch. 13 - What is the value of the van’t Hoff factor for KCI...Ch. 13 - A solid mixture of KCI, KNO3, and Ba(N03)2 is...Ch. 13 - Prob. 13.139SPCh. 13 - An aqueous solution of a certain organic compound...Ch. 13 - Prob. 13.141SPCh. 13 - Prob. 13.142SPCh. 13 - A solution of 0.250 g of naphthalene (mothballs)...Ch. 13 - Prob. 13.144SPCh. 13 - Prob. 13.145SPCh. 13 - The steroid hormone estradiol contains only C, H,...Ch. 13 - Many acids are partially dissociated into ions in...Ch. 13 - Addition of 50.00 mL of 2.238 H2SO4 (solution...Ch. 13 - Prob. 13.149MPCh. 13 - Prob. 13.150MPCh. 13 - Combustion analysis of a 36.72-mg sample of the...Ch. 13 - Prob. 13.152MPCh. 13 - Prob. 13.153MPCh. 13 - Prob. 13.154MP
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- Decide whether these proposed Lewis structures are reasonable. proposed Lewis structure Yes. Is the proposed Lewis structure reasonable? Cl- : 2: :Z: :Z: N—N : 0: C C1: O CO No, it has the wrong number of valence electrons. The correct number is: ☐ No, it has the right number of valence electrons but doesn't satisfy the octet rule. The symbols of the problem atoms are:* ☐ Yes. No, it has the wrong number of valence electrons. The correct number is: ☐ No, it has the right number of valence electrons but doesn't satisfy the octet rule. The symbols of the problem atoms are:* | Yes. No, it has the wrong number of valence electrons. The correct number is: No, it has the right number of valence electrons but doesn't satisfy the octet rule. The symbols of the problem atoms are:* | If two or more atoms of the same element don't satisfy the octet rule, just enter the chemical symbol as many times as necessary. For example, if two oxygen atoms don't satisfy the octet rule, enter "0,0". ☑arrow_forwardUse 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 ΔΗ is (pick one) A This reaction is faster above 103. °C than below. AS is (pick one) ΔΗ is (pick one) B This reaction is spontaneous only above -9. °C. AS is (pick one) ΔΗ is (pick one) C The reverse of this reaction is always spontaneous. AS is (pick one) 18 Ararrow_forwardUse 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 The reverse of this reaction is always spontaneous but proceeds slower at temperatures below 41. °C. ΔΗ is (pick one) AS is (pick one) ΔΗ is (pick one) B This reaction is spontaneous except above 94. °C. AS is (pick one) This reaction is always spontaneous, but ΔΗ is (pick one) C proceeds slower at temperatures below −14. °C. AS is (pick one) Х 00. 18 Ar 무ㅎ B 1 1arrow_forward
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Solutions: Crash Course Chemistry #27; Author: Crash Course;https://www.youtube.com/watch?v=9h2f1Bjr0p4;License: Standard YouTube License, CC-BY