General, Organic, and Biological Chemistry
7th Edition
ISBN: 9781285853918
Author: H. Stephen Stoker
Publisher: Cengage Learning
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Chapter 8, Problem 8.71EP
Interpretation Introduction
Interpretation:
The diagram that represents the newly formed solution has to be identified.
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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•
Chapter 8 Solutions
General, Organic, and Biological Chemistry
Ch. 8.1 - In a solution containing 15 mL of water and 25 mL...Ch. 8.1 - Prob. 2QQCh. 8.1 - Which of the following statements about solutions...Ch. 8.2 - Which of the following statements concerning a...Ch. 8.2 - Prob. 2QQCh. 8.2 - Prob. 3QQCh. 8.3 - When an ionic solute dissolves in water, the water...Ch. 8.3 - Which of the following does not affect the rate at...Ch. 8.3 - Prob. 3QQCh. 8.4 - The word like in the solubility rule like...
Ch. 8.4 - The rule like dissolves like is not adequate when...Ch. 8.4 - Prob. 3QQCh. 8.4 - Chlorides, bromides, and iodides are soluble in...Ch. 8.5 - Prob. 1QQCh. 8.5 - Prob. 2QQCh. 8.5 - Prob. 3QQCh. 8.5 - Prob. 4QQCh. 8.5 - Prob. 5QQCh. 8.5 - Prob. 6QQCh. 8.6 - The defining equation for the molarity...Ch. 8.6 - For which of the following solutions is the...Ch. 8.6 - Prob. 3QQCh. 8.7 - When 60.0 mL of a 1.00 M solution is diluted by...Ch. 8.7 - Prob. 2QQCh. 8.7 - Prob. 3QQCh. 8.8 - A colloidal dispersion differs from a true...Ch. 8.8 - Prob. 2QQCh. 8.8 - Prob. 3QQCh. 8.9 - Adding a nonvolatile solute to a pure solvent...Ch. 8.9 - Prob. 2QQCh. 8.9 - Prob. 3QQCh. 8.9 - Which of the following solutions would have a...Ch. 8.10 - Prob. 1QQCh. 8.10 - The osmolarity of a 0.40 molar NaCl solution is a....Ch. 8.10 - Prob. 3QQCh. 8.10 - Which of the following solutions is hypertonic...Ch. 8.10 - Which of the following solutions is isotonic with...Ch. 8 - Prob. 8.1EPCh. 8 - Prob. 8.2EPCh. 8 - Prob. 8.3EPCh. 8 - Identify the solute and the solvent in solutions...Ch. 8 - For each of the following pairs of solutions,...Ch. 8 - For each of the following pairs of solutions,...Ch. 8 - Classify each of the following solutions as...Ch. 8 - Classify each of the following solutions as...Ch. 8 - A solution is made by dissolving 34.0 g of NaCl in...Ch. 8 - A solution is made by dissolving 0.455 g of PbBr2...Ch. 8 - A compound has a solubility in water of 35 g/L at...Ch. 8 - A compound has a solubility in water of 40 g/L at...Ch. 8 - Match each of the following statements about the...Ch. 8 - Prob. 8.14EPCh. 8 - Prob. 8.15EPCh. 8 - Prob. 8.16EPCh. 8 - Prob. 8.17EPCh. 8 - Prob. 8.18EPCh. 8 - Prob. 8.19EPCh. 8 - Methanol is a polar solvent and heptane is a...Ch. 8 - Using Table 8-2, classify each of the following...Ch. 8 - Using Table 8-2, classify each of the following...Ch. 8 - Prob. 8.23EPCh. 8 - Using Table 8-2, indicate whether each of the...Ch. 8 - Using Table 8-2, indicate whether each of the...Ch. 8 - Using Table 8-2, indicate whether each of the...Ch. 8 - Indicate whether or not the two members of each of...Ch. 8 - Indicate whether or not the two members of each of...Ch. 8 - A compound has a solubility in water of 250 mg/L...Ch. 8 - A compound has a solubility in water of 750 mg/L...Ch. 8 - The following diagrams show varying amounts of the...Ch. 8 - The following diagrams show varying amounts of the...Ch. 8 - Prob. 8.33EPCh. 8 - Prob. 8.34EPCh. 8 - Prob. 8.35EPCh. 8 - Prob. 8.36EPCh. 8 - How many grams of glucose must be added to 275 g...Ch. 8 - How many grams of lactose must be added to 655 g...Ch. 8 - Calculate the mass, in grams, of K2SO4 needed to...Ch. 8 - Calculate the mass, in grams, of KCl needed to...Ch. 8 - Prob. 8.41EPCh. 8 - Prob. 8.42EPCh. 8 - Prob. 8.43EPCh. 8 - Prob. 8.44EPCh. 8 - Prob. 8.45EPCh. 8 - Prob. 8.46EPCh. 8 - Prob. 8.47EPCh. 8 - Prob. 8.48EPCh. 8 - Prob. 8.49EPCh. 8 - How many grams of Na2S2O3 are needed to prepare...Ch. 8 - How many grams of NaCl are present in 50.0 mL of a...Ch. 8 - Prob. 8.52EPCh. 8 - Prob. 8.53EPCh. 8 - Prob. 8.54EPCh. 8 - Prob. 8.55EPCh. 8 - Prob. 8.56EPCh. 8 - Prob. 8.57EPCh. 8 - Prob. 8.58EPCh. 8 - Prob. 8.59EPCh. 8 - Prob. 8.60EPCh. 8 - Prob. 8.61EPCh. 8 - Prob. 8.62EPCh. 8 - Prob. 8.63EPCh. 8 - Prob. 8.64EPCh. 8 - Prob. 8.65EPCh. 8 - Prob. 8.66EPCh. 8 - Prob. 8.67EPCh. 8 - Prob. 8.68EPCh. 8 - Prob. 8.69EPCh. 8 - Prob. 8.70EPCh. 8 - Prob. 8.71EPCh. 8 - Prob. 8.72EPCh. 8 - What is the molarity of the solution prepared by...Ch. 8 - What is the molarity of the solution prepared by...Ch. 8 - Prob. 8.75EPCh. 8 - Prob. 8.76EPCh. 8 - Prob. 8.77EPCh. 8 - Prob. 8.78EPCh. 8 - Prob. 8.79EPCh. 8 - Prob. 8.80EPCh. 8 - Prob. 8.81EPCh. 8 - How are the boiling point and freezing point of...Ch. 8 - Prob. 8.83EPCh. 8 - How does the freezing point of seawater compare...Ch. 8 - Prob. 8.85EPCh. 8 - Assume that you have identical volumes of two...Ch. 8 - What is the boiling point of a solution that...Ch. 8 - What is the boiling point of a solution that...Ch. 8 - Prob. 8.89EPCh. 8 - What is the freezing point of a solution that...Ch. 8 - Prob. 8.91EPCh. 8 - Which member of each of the following pairs of...Ch. 8 - What would be the freezing point of a solution...Ch. 8 - Prob. 8.94EPCh. 8 - Indicate whether the osmotic pressure of a 0.1 M...Ch. 8 - Indicate whether the osmotic pressure of a 0.1 M...Ch. 8 - Prob. 8.97EPCh. 8 - Prob. 8.98EPCh. 8 - What is the osmolarity of each of the following...Ch. 8 - Prob. 8.100EPCh. 8 - Prob. 8.101EPCh. 8 - Prob. 8.102EPCh. 8 - Will red blood cells swell, remain the same size,...Ch. 8 - Will red blood cells swell, remain the same size,...Ch. 8 - Will red blood cells crenate, hemolyze, or remain...Ch. 8 - Will red blood cells crenate, hemolyze, or remain...Ch. 8 - Prob. 8.107EPCh. 8 - Prob. 8.108EPCh. 8 - Prob. 8.109EPCh. 8 - Will red blood cells swell, remain the same size,...Ch. 8 - Will red blood cells crenate, hemolyze, or remain...Ch. 8 - Will red blood cells crenate, hemolyze, or remain...Ch. 8 - Consider two solutions, A and B, separated by an...Ch. 8 - Consider two solutions, A and B, separated by an...Ch. 8 - Prob. 8.115EPCh. 8 - Prob. 8.116EPCh. 8 - Which of the following aqueous solutions would...Ch. 8 - Which of the following aqueous solutions would...
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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 The reverse of this reaction is always spontaneous but proceeds faster at temperatures above -48. °C. ΔΗ is (pick one) ✓ AS is (pick one) B This reaction is spontaneous except below 114. °C but proceeds at a slower rate below 135. °C. ΔΗ is (pick one) AS is (pick one) ΔΗ is C This reaction is exothermic and proceeds faster at temperatures above -43. °C. (pick one) AS is (pick one) v Х 5 ? 18 Ararrow_forwardion. A student proposes the following Lewis structure for the perchlorate (CIO) io : :0: : Cl : - - : :0: ك Assign a formal charge to each atom in the student's Lewis structure. atom central O formal charge ☐ top O ☐ right O ☐ bottom O ☐ Cl ☐arrow_forwardDecide 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_forward
- 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 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_forwardDraw the product of the reaction shown below. Ignore inorganic byproducts. + H CH3CH2OH HCI Drawingarrow_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