EBK CHEMISTRY: PRINCIPLES AND REACTIONS
8th Edition
ISBN: 8220100547966
Author: Hurley
Publisher: CENGAGE L
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Textbook Question
Chapter 9, Problem 42QAP
Of the four general types of solids, which one(s)
(a) are generally insoluble in water?
(b) have very high melting points?
(c) conduct electricity as solids?
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Experiment:
Each team will be provided with 5g of a mixture of acetanilide and salicylic acid. You will divide it into three 1.5 g portions in separate 125 mL Erlenmeyer flasks savıng some for melting point analysis. Dissolve the mixture in each flask in ~60mL of DI water by heating to boiling on a hotplate. Take the flasks off the hotplate once you have a clear solution and let them stand on the bench top for 5 mins and then allow them to cool as described below.
Sample A-Let the first sample cool slowly to room temperature by letting it stand on your lab bench, with occasional stirring to promote crystallization.
Sample B-Cool the second sample 1n a tap-water bath to 10-15 °C
Sample C-Cool the third sample in an ice-bath to 0-2 °C
Results:
weight after recrystalization and melting point temp.
A=0.624g,102-115°
B=0.765g, 80-105°
C=1.135g, 77-108
What is the percent yield of A,B, and C.
Chapter 9 Solutions
EBK CHEMISTRY: PRINCIPLES AND REACTIONS
Ch. 9 - Prob. 1QAPCh. 9 - Prob. 2QAPCh. 9 - The vapor pressure of I2(s) at 30C is 0.466 mm Hg....Ch. 9 - Prob. 4QAPCh. 9 - Trichloroethane, C2H3Cl3 is used as a degreaser...Ch. 9 - p-Dichlorobenzene, C6H4Cl2, can be one of the...Ch. 9 - Prob. 7QAPCh. 9 - Dichloromethane, CH2Cl2,is widely used as a...Ch. 9 - Prob. 9QAPCh. 9 - Prob. 10QAP
Ch. 9 - At a resort in Sante Fe, New Mexico, the...Ch. 9 - Prob. 12QAPCh. 9 - Prob. 13QAPCh. 9 - Consider the following data for the vapor pressure...Ch. 9 - Referring to Figure 9.7, state what phase(s)...Ch. 9 - Referring to Figure 9.7, state what phase(s) is...Ch. 9 - Prob. 17QAPCh. 9 - Consider the phase diagram of the compound in...Ch. 9 - Prob. 19QAPCh. 9 - Prob. 20QAPCh. 9 - Given the following data about xenon,...Ch. 9 - Given the following data about CO2: • triple...Ch. 9 - A pure substance X has the following properties:...Ch. 9 - Prob. 24QAPCh. 9 - Prob. 25QAPCh. 9 - Arrange the following compounds in order of...Ch. 9 - Which of the following would you expect to show...Ch. 9 - Which of the following compounds would you expect...Ch. 9 - Prob. 29QAPCh. 9 - Prob. 30QAPCh. 9 - Explain in terms of forces between structural...Ch. 9 - Prob. 32QAPCh. 9 - Prob. 33QAPCh. 9 - In which of the following processes is it...Ch. 9 - For each of the following pairs, choose the member...Ch. 9 - Follow the directions for Question 35 for the...Ch. 9 - What are the strongest attractive forces that must...Ch. 9 - What are the strongest attractive forces that must...Ch. 9 - Prob. 39QAPCh. 9 - Prob. 40QAPCh. 9 - Of the four general types of solids, which one(s)...Ch. 9 - Of the four general types of solids, which one(s)...Ch. 9 - Prob. 43QAPCh. 9 - Prob. 44QAPCh. 9 - Give the formula of a solid containing Si that is...Ch. 9 - Prob. 46QAPCh. 9 - Prob. 47QAPCh. 9 - Describe the structural units in (a) C (graphite)...Ch. 9 - Molybdenum has an atomic radius of 0.145 nm. The...Ch. 9 - Nickel has an atomic radius of 0.162 nm. The edge...Ch. 9 - Lead (atomicradius=0.181nm) crystallizes with a...Ch. 9 - Iridium crystallizes in a face-centered unit cell....Ch. 9 - In the LiCl structure shown in Figure 9.21, the...Ch. 9 - Potassium iodide has a unit cell similar to that...Ch. 9 - Prob. 55QAPCh. 9 - Consider the CsCl cell (Figure 9.21). The ionic...Ch. 9 - Consider the sodium chloride unit cell shown in...Ch. 9 - Consider the CsCl unit shown in Figure 9.21. How...Ch. 9 - A 1.25-L clean and dry flask is sealed. The air in...Ch. 9 - Aluminum metal crystallizes with a face-centered...Ch. 9 - Consider a sealed flask with a movable piston that...Ch. 9 - Prob. 62QAPCh. 9 - Prob. 63QAPCh. 9 - Prob. 64QAPCh. 9 - Chloroform, CHCl3, has a normal boiling point of...Ch. 9 - Prob. 66QAPCh. 9 - Prob. 67QAPCh. 9 - In the blanks provided, answer the questions...Ch. 9 - Answer the questions below, by filling in the...Ch. 9 - Prob. 70QAPCh. 9 - Prob. 71QAPCh. 9 - What is the difference between (a) a covalent bond...Ch. 9 - Four shiny solids are labeled A, B, C, and D....Ch. 9 - Prob. 74QAPCh. 9 - The following data are given for CC14:...Ch. 9 - Iron crystallizes in a body-centered unit cell....Ch. 9 - Prob. 77QAPCh. 9 - Trichloroethane, C2H3Cl3, is the active ingredient...Ch. 9 - Prob. 79QAPCh. 9 - Prob. 80QAPCh. 9 - Prob. 81QAP
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