Explanation Given: Mass of compound in solution, m compound = 2 .10 g . Volume of solution, V solution = 175 .0 mL . Osmotic pressure of solution, Π = 1 .93 atm . Temperature of solution, T = 25 ° C . Mass of compound combusted, m combustion = 24 .02 g . Mass of CO 2 produced, m CO 2 = 2 8 . 1 6 g . Mass of H 2 O produced, m H 2 O = 8 . 6 4 g . Explanation: (1) Convert the temperature to absolute scale as follows: T /K = T /°C + 273 .15 =25°C + 273 .15 = 298. 15 K (2) Osmotic pressure for an ionic solution is given as follows: Π = M R T Here, Π is the osmotic pressure of the solution, M is the molarity of the solution, R is the gas constant, and T is the absolute temperature. Calculate the molar mass of the compound as follows: Π = ( m compound Molar mass ( compound ) × V solution ( in L ) ) × R × T Molar mass ( compound ) = ( m compound Π × V solution ( in L ) ) × R × T = ( 2 .10 g 1.93 atm × 175 .0 mL ( 1000 mL 1 L ) ) × ( 0 .082057 L atm/(K mol) ) × 298. 15 K = 152 .12 g/mol (3) The number of moles of carbon in the compound is equal to the number of moles of carbon dioxide produced on combustion. Calculate the number of moles of carbon in the compound as follows: n C = m CO 2 Molar mass (CO 2 ) = 2 8 . 1 6 g 44.01 g/mol = 0 .64 mol (4) The number of moles of hydrogen in the compound is equal to the twice the number of moles of water produced on combustion. Calculate the number of moles of hydrogen in the compound as follows: n H = 2 × ( m H 2 O Molar mass (H 2 O) ) = 2 × ( 8

Chemistry: A Molecular Approach (4th Edition)

4th Edition

ISBN: 9780134112831

Author: Nivaldo J. Tro

Publisher: PEARSON

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Chapter 13, Problem 122E

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To determine: The molecular formula of the compound.

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Chapter 13, Problem 121E

Chapter 13, Problem 123E

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Chapter 13 Solutions

Chemistry: A Molecular Approach (4th Edition)

Ch. 13 - Prob. 1SAQ Ch. 13 - Prob. 2SAQ Ch. 13 - Prob. 3SAQ Ch. 13 - Q4. A potassium bromide solution is 7.55 %...Ch. 13 - Prob. 5SAQ Ch. 13 - Prob. 6SAQ Ch. 13 - Prob. 7SAQ Ch. 13 - Prob. 8SAQ Ch. 13 - Prob. 9SAQ Ch. 13 - Prob. 10SAQ

Ch. 13 - Prob. 11SAQ Ch. 13 - Prob. 12SAQ Ch. 13 - Q13. A 2.4 m aqueous solution of an ionic compound...Ch. 13 - Q14. A solution is an equimolar mixture of two...Ch. 13 - Prob. 15SAQ Ch. 13 - Prob. 1E Ch. 13 - Prob. 2E Ch. 13 - Prob. 3E Ch. 13 - Prob. 4E Ch. 13 - Prob. 5E Ch. 13 - Prob. 6E Ch. 13 - Prob. 7E Ch. 13 - Prob. 8E Ch. 13 - Prob. 9E Ch. 13 - 10. What is the heat of hydration (ΔHhydration)?...Ch. 13 - Prob. 11E Ch. 13 - Prob. 12E Ch. 13 - Prob. 13E Ch. 13 - Prob. 14E Ch. 13 - Prob. 15E Ch. 13 - Prob. 16E Ch. 13 - Prob. 17E Ch. 13 - Prob. 18E Ch. 13 - Prob. 19E Ch. 13 - Prob. 20E Ch. 13 - Prob. 21E Ch. 13 - 22. Explain why the lower vapor pressure for a...Ch. 13 - Prob. 23E Ch. 13 - Prob. 24E Ch. 13 - Prob. 25E Ch. 13 - Prob. 26E Ch. 13 - Prob. 27E Ch. 13 - Prob. 28E Ch. 13 - Prob. 29E Ch. 13 - 30. Pick an appropriate solvent from Table 13.3 to...Ch. 13 - 31. Which molecule would you expect to be more...Ch. 13 - 32. Which molecule would you expect to be more...Ch. 13 - Prob. 33E Ch. 13 - Prob. 34E Ch. 13 - 35. When ammonium chloride (NH4Cl) is dissolved in...Ch. 13 - 36. When lithium iodide (LiI) is dissolved in...Ch. 13 - 37. Silver nitrate has a lattice energy of –820...Ch. 13 - Prob. 38E Ch. 13 - Prob. 39E Ch. 13 - Prob. 40E Ch. 13 - Prob. 41E Ch. 13 - 42. A solution contains 32 g of KNO3 per 100.0 g...Ch. 13 - Prob. 43E Ch. 13 - Prob. 44E Ch. 13 - Prob. 45E Ch. 13 - Prob. 46E Ch. 13 - Prob. 47E Ch. 13 - Prob. 48E Ch. 13 - Prob. 49E Ch. 13 - Prob. 50E Ch. 13 - Prob. 51E Ch. 13 - Prob. 52E Ch. 13 - Prob. 53E Ch. 13 - Prob. 54E Ch. 13 - 55. Silver nitrate solutions are often used to...Ch. 13 - Prob. 56E Ch. 13 - Prob. 57E Ch. 13 - Prob. 58E Ch. 13 - Prob. 59E Ch. 13 - Prob. 60E Ch. 13 - Prob. 61E Ch. 13 - Prob. 62E Ch. 13 - Prob. 63E Ch. 13 - Prob. 64E Ch. 13 - Prob. 65E Ch. 13 - Prob. 66E Ch. 13 - Prob. 67E Ch. 13 - Prob. 68E Ch. 13 - Prob. 69E Ch. 13 - Prob. 70E Ch. 13 - 71. Calculate the vapor pressure of a solution...Ch. 13 - Prob. 72E Ch. 13 - 73. A solution contains 50.0 g of heptane (C7H16)...Ch. 13 - Prob. 74E Ch. 13 - 75. A solution contains 4.08 g of chloroform...Ch. 13 - Prob. 76E Ch. 13 - Prob. 77E Ch. 13 - Prob. 78E Ch. 13 - Prob. 79E Ch. 13 - 80. Calculate the freezing point and boiling point...Ch. 13 - 81. An aqueous solution containing 17.5 g of an...Ch. 13 - Prob. 82E Ch. 13 - 83. Calculate the osmotic pressure of a solution...Ch. 13 - Prob. 84E Ch. 13 - 85. A solution containing 27.55 mg of an unknown...Ch. 13 - Prob. 86E Ch. 13 - 87. Calculate the freezing point and boiling point...Ch. 13 - Prob. 88E Ch. 13 - 89. What mass of salt (NaCl) should you add to...Ch. 13 - Prob. 90E Ch. 13 - Prob. 91E Ch. 13 - Prob. 92E Ch. 13 - Prob. 93E Ch. 13 - Prob. 94E Ch. 13 - 95. A 0.100 M ionic solution has an osmotic...Ch. 13 - Prob. 96E Ch. 13 - 97. Calculate the vapor pressure at 25 °C of an...Ch. 13 - Prob. 98E Ch. 13 - Prob. 99E Ch. 13 - 100. The solubility of phenol in water at 25 °C is...Ch. 13 - Prob. 101E Ch. 13 - Prob. 102E Ch. 13 - Prob. 103E Ch. 13 - Prob. 104E Ch. 13 - Prob. 105E Ch. 13 - Prob. 106E Ch. 13 - Prob. 107E Ch. 13 - 108. The vapor above an aqueous solution contains...Ch. 13 - Prob. 109E Ch. 13 - Prob. 110E Ch. 13 - Prob. 111E Ch. 13 - Prob. 112E Ch. 13 - Prob. 113E Ch. 13 - Prob. 114E Ch. 13 - Prob. 115E Ch. 13 - Prob. 116E Ch. 13 - Prob. 117E Ch. 13 - Prob. 118E Ch. 13 - Prob. 119E Ch. 13 - Prob. 120E Ch. 13 - Prob. 121E Ch. 13 - Prob. 122E Ch. 13 - 123. A 100.0-mL aqueous sodium chloride solution...Ch. 13 - Prob. 124E Ch. 13 - Prob. 125E Ch. 13 - Prob. 126E Ch. 13 - 127. A 1.10-g sample contains only glucose...Ch. 13 - 128. A solution is prepared by mixing 631 mL of...Ch. 13 - 129. Two alcohols, isopropyl alcohol and propyl...Ch. 13 - Prob. 130E Ch. 13 - Prob. 131E Ch. 13 - 132. A solution of 75.0 g of benzene (C6H6) and...Ch. 13 - Prob. 133E Ch. 13 - Prob. 134E Ch. 13 - Prob. 135E Ch. 13 - Prob. 136E Ch. 13 - 137. If each substance listed here costs the same...Ch. 13 - Prob. 138E Ch. 13 - Prob. 139QGW Ch. 13 - Prob. 140QGW Ch. 13 - Prob. 141QGW Ch. 13 - Prob. 142QGW Ch. 13 - Prob. 143QGW Ch. 13 - Prob. 144DIA

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