Chemistry: Structure and Properties (2nd Edition)
2nd Edition
ISBN: 9780134293936
Author: Nivaldo J. Tro
Publisher: PEARSON
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Chapter 17, Problem 119E
A 0.25-mol sample of a weak acid with an unknown pKais combined with 10.0 ml of 3.00 M KOH, and the resulting solution is diluted to 1.500 L. The measured pH of the solution is 3.85. What is the pKaof the weak acid?
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Directions: Given the following reaction and the stress applied in each
reaction, answer the question below.
A. H2(g) + Cl2(g) 2 HCl(g)
Stress applied: Decreasing the pressure
1. What is the Keq expression?
2. What will be the effect in the number of moles of HCl(g)?
3. What will be the Equilibrium Shift or the reaction?
B.
Fe3O4(s) + 4 H2(g) + heat 53 Fe(s) + 4 H₂O(g)
Stress applied: Increasing the temperature
1. What is the Keq expression?.
2. What will be the effect in the volume of water vapor collected?
3. What will be the Equilibrium Shift or the reaction?
C. 4 NH3(g) + 5 O2(g) 4 NO(g) + 6 H2O(g) + heat
Stress applied: Increasing the volume of the container
1. What is the Keq expression?.
2. What will be the effect in the amount of H₂O?
3. What will be the Equilibrium Shift or the reaction?
Consider the solubility products (Ksp values) for the following compounds:SrSO4 (Ksp = 7.6 x 10−7), BaSO4 (Ksp = 1.5 x 10−9), SrCO3 (Ksp = 7.0 x 10−10), BaCO3 (Ksp = 1.6 x 10−9)Which anion is the harder base, CO32− or SO42−? Justify your answer.
Chapter 17 Solutions
Chemistry: Structure and Properties (2nd Edition)
Ch. 17 - What is the pH range of human blood? How is human...Ch. 17 - What is a buffer? How does a buffer work? How does...Ch. 17 - What is the common ion effect?Ch. 17 - What is the HendersonHasselbalch equation, and why...Ch. 17 - What is the pH of a buffer when the concentrations...Ch. 17 - Suppose that a buffer contains equal amounts of a...Ch. 17 - How do you use the Henderson—Hasselbalch equation...Ch. 17 - What factors influence the effectiveness of a...Ch. 17 - What is the effective pH range of a buffer...Ch. 17 - Describe acidbase titration. What is the...
Ch. 17 - The pH at the equivalence point of the titration...Ch. 17 - The volume required to reach the equivalence point...Ch. 17 - In the titration of a strong acid with a strong...Ch. 17 - In the titration of a weak acid with a strong...Ch. 17 - The titration of a diprotic acid with sufficiently...Ch. 17 - In the titration of a polyprotic acid, the volume...Ch. 17 - What is the difference between the endpoint and...Ch. 17 - What is an indicator? How can an indicator signal...Ch. 17 - What is the solubility-product constant? Write a...Ch. 17 - What is molar solubility? How do you obtain the...Ch. 17 - How does a common ion affect the solubility of a...Ch. 17 - How is the solubility of an ionic compound with a...Ch. 17 - For a given solution containing an ionic compound,...Ch. 17 - What is selective precipitation? Under which...Ch. 17 - In which of these solutions does HNO2 ionize less...Ch. 17 - A formic acid solution has a pH of 3.25. 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It is colorless...Ch. 17 - Referring to Table 17.1pick an indicator for use...Ch. 17 - Referring to Table 17.1 pick an indicator for use...Ch. 17 - Write balanced equations and expressions for...Ch. 17 - Prob. 84ECh. 17 - Refer to the Kspvalues in Table 17.2 to calculate...Ch. 17 - Prob. 86ECh. 17 - Use the given molar solubilities in pure water to...Ch. 17 - Prob. 88ECh. 17 - Two compounds with general formulas AX and AX2...Ch. 17 - Consider the compounds with the generic formulas...Ch. 17 - Refer to the Ksp value from Table 17.2 to...Ch. 17 - Prob. 92ECh. 17 - Calculate the molar solubility of barium fluoride...Ch. 17 - Prob. 94ECh. 17 - Calculate the molar solubility of calcium...Ch. 17 - Calculate the solubility (in grams per 1.00102 of...Ch. 17 - Is each compound more soluble in acidic solution...Ch. 17 - Is each compound more soluble in acidic solution...Ch. 17 - A solution containing sodium fluoride is mixed...Ch. 17 - A solution containing potassium bromide is mixed...Ch. 17 - Predict whether a precipitate forms if you mix...Ch. 17 - Prob. 102ECh. 17 - Prob. 103ECh. 17 - Prob. 104ECh. 17 - A solution is 0.010 M in Ba2+ and 0.020 M in Ca2+...Ch. 17 - Prob. 106ECh. 17 - A solution is made 1.1103M in Zn(NO3)2 and 0.150 M...Ch. 17 - A 120.0-mL sample of a solution that is 2.8103M in...Ch. 17 - Use the appropriate values of Kspand Kfto find the...Ch. 17 - Prob. 110ECh. 17 - A 1.500-mL solution contains 2.05 g of sodium...Ch. 17 - A solution ¡s made by combining 10.0 ml of 17.5 M...Ch. 17 - A buffer is created by combining 150.0 mL of 0.25...Ch. 17 - A buffer is created by combining 3.55 g of NH3...Ch. 17 - A 1.0-L buffer solution initially contains 0.25...Ch. 17 - A 250.0-mL buffer solution initially contains...Ch. 17 - In analytical chemistry, bases used for titrations...Ch. 17 - A 0.5224-g sample of an unknown monoprotic acid...Ch. 17 - A 0.25-mol sample of a weak acid with an unknown...Ch. 17 - A 5.55-g sample of a weak acid with Ka=1.3104 is...Ch. 17 - A 0.552-g sample of ascorbic acid (vitamin C) is...Ch. 17 - Sketch the titration curve from Problem 121by...Ch. 17 - One of the main components of hard water is CaCO3....Ch. 17 - Gout—a condition that results in joint swelling...Ch. 17 - Pseudogout, a condition with symptoms similar to...Ch. 17 - Calculate the solubility of silver chloride in a...Ch. 17 - Calculate the solubility of CuX ¡n a solution that...Ch. 17 - Aniline, C6H5NH2, is an important organic base...Ch. 17 - The Kbof hydroxylamine, NH2OH is 1.0108 . 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