EBK EXPERIMENTAL ORGANIC CHEMISTRY: A M
6th Edition
ISBN: 9781305687875
Author: Gilbert
Publisher: CENGAGE LEARNING - CONSIGNMENT
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Chapter 3.3, Problem 19E
Interpretation Introduction
Interpretation:Reason for different melting points for same compound should be determined.
Concept introduction:Melting point is temperature that involves conversion of substance from solid to liquid state. Both liquid and solid phases are present in equilibrium with each other at this temperature.
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Rank the elements or compounds in the table below in decreasing order of their boiling points. That is, choose 1 next to the substance with the highest boiling point, choose 2 next to the substance with the next highest boiling point, and so on.
Chapter 3 Solutions
EBK EXPERIMENTAL ORGANIC CHEMISTRY: A M
Ch. 3.2 - Prob. 1ECh. 3.2 - Prob. 2ECh. 3.2 - Prob. 3ECh. 3.2 - Prob. 4ECh. 3.2 - Prob. 5ECh. 3.2 - Prob. 6ECh. 3.2 - Prob. 7ECh. 3.2 - Prob. 8ECh. 3.2 - Prob. 9ECh. 3.2 - Prob. 10E
Ch. 3.2 - Prob. 11ECh. 3.2 - Prob. 12ECh. 3.2 - Prob. 13ECh. 3.2 - Prob. 14ECh. 3.2 - Prob. 15ECh. 3.2 - Prob. 16ECh. 3.2 - Prob. 17ECh. 3.2 - Prob. 18ECh. 3.2 - Prob. 19ECh. 3.2 - Prob. 20ECh. 3.2 - Prob. 21ECh. 3.2 - Prob. 22ECh. 3.2 - Prob. 23ECh. 3.2 - Prob. 24ECh. 3.2 - Prob. 25ECh. 3.2 - Prob. 26ECh. 3.2 - Prob. 27ECh. 3.2 - Prob. 28ECh. 3.2 - Prob. 29ECh. 3.2 - Prob. 30ECh. 3.2 - Prob. 31ECh. 3.2 - Prob. 32ECh. 3.2 - Prob. 34ECh. 3.3 - Prob. 1ECh. 3.3 - Prob. 2ECh. 3.3 - Prob. 3ECh. 3.3 - Prob. 4ECh. 3.3 - Prob. 5ECh. 3.3 - Prob. 6ECh. 3.3 - Prob. 7ECh. 3.3 - Prob. 8ECh. 3.3 - Prob. 10ECh. 3.3 - Prob. 11ECh. 3.3 - Prob. 12ECh. 3.3 - Prob. 13ECh. 3.3 - Prob. 14ECh. 3.3 - Prob. 15ECh. 3.3 - Prob. 16ECh. 3.3 - Prob. 17ECh. 3.3 - Prob. 18ECh. 3.3 - Prob. 19ECh. 3.3 - Prob. 21ECh. 3.3 - Prob. 22ECh. 3.3 - Prob. 23ECh. 3.3 - Prob. 24ECh. 3.3 - Prob. 25ECh. 3.3 - Prob. 26E
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- Rank the elements or compounds in the table below in decreasing order of their boiling points. That is, choose 1 next to the substance with the highest boiling point, choose 2 next to the substance with the next highest boiling point, and so on.arrow_forwardJust what does it imply when people talk about a "homogeneous structure?"arrow_forwardAt room temperature, what physical state (solid, liquid or gas) would you predict for C18H38? Justify your answerarrow_forward
- Which answer best describes the redistribution of matter or energy when melting takes place? more uniform dispersal of matter less uniform dispersal of matter more uniform dispersal of energy less uniform dispersal of energyarrow_forwardAnswer the following using the table 1. State which of elements A1 or K11 have the lower melting point. Explain why. 2. State which of elements G7 or B2 have the lower melting point. Explain why.arrow_forwardEnumerate methods to determine a compound's melting point.arrow_forward
- Why do impure compounds normally have a lower melting point than the pure substance?arrow_forward3.Why is slow cooling required to produce pure crystals?arrow_forwardQs2. You are given two similar looking white, organic crystalline solids and determine their melting points. You find one to be 156-158° C and the other to be 154-157 C. Suggest the experiment to determine whether the two substances are identical or different. Briefly describe how the results obtained would differ if the substances were identical or if they were differentarrow_forward
- 4. When performing a melting point on a solid compound using a melting point apparatus, two melting point determinations were made. One sample, which was 1 mm in height in the capillary, possessed a melting point of 200.0-200.5°C. The other sample was 25 mm in height. What would you expect the approximate melting point to be for this sample, assuming identical heating rates of 1°/min? (Hint: heat is applied from the bottom of the sample) (Give an actual numerical approximation!) 5. For the same solid compound as the question above, if the 1 mm sample was heated at 60° per minute on a melting point apparatus, what would you expect for an approximate melting point? (note that at this heating rate, the sample will melt rather quickly, but again give an actual numerical approximation)arrow_forwardCIF(g) + F2(g) CIF3 (g) (6)*) AHDarrow_forwardThe structures of 2,2-dimethylpropane and pentane are shown. H H H H CH3 H3C CH3 CH3 surface area of 2,2-dimethylpropane surface area of pentane = pentane H = O 2,2-dimethylpropane H 2,2-dimethylpropane Calculate the surface area of each compound, assuming that 2,2-dimethylpropane is approximately spherical with a radius of 254 pm and that pentane is approximately a rectangular prism with dimensions of 295 pm × 692 pm × 766 pm. H H H Select the molecule that has the larger surface area. pentane H H Select the true statement about the boiling points of these two molecules. Pentane has the higher boiling point because it has the smaller surface area. 2,2-Dimethylproane has the higher boiling point because it has the larger surface area. Pentane has the higher boiling point because it has the larger surface area. O 2,2-Dimethylproane has the higher boiling point because it has the smaller surface area. 2 pm² 2 pm²arrow_forward
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