a)
Interpretation:Vapor pressure as applied to melting should be defined.
Concept introduction:Changes that involve no transformation of one substance into another are called physical changes. In these changes, size and shape of matter are changed but these are not accompanied by
b)
Interpretation:Melting point or melting point range should be defined.
Concept introduction:Changes that involve no transformation of one substance into another are called physical changes. In these changes, size and shape of matter are changed but these are not accompanied by chemical reactions. Melting of ice, boiling of water, dissolution of sugar into water are some examples of physical changes.
c)
Interpretation:Mixed melting point should be defined.
Concept introduction:Changes that involve no transformation of one substance into another are called physical changes. In these changes, size and shape of matter are changed but these are not accompanied by chemical reactions. Melting of ice, boiling of water, dissolution of sugar into water are some examples of physical changes.
d)
Interpretation:Eutectic point should be determined.
Concept introduction:Changes that involve no transformation of one substance into another are called physical changes. In these changes, size and shape of matter are changed but these are not accompanied by chemical reactions. Melting of ice, boiling of water, dissolution of sugar into water are some examples of physical changes.
e)
Interpretation: Eutectic mixture should be determined.
Concept introduction: Changes that involve no transformation of one substance into another are called physical changes. In these changes, size and shape of matter are changed but these are not accompanied by chemical reactions. Melting of ice, boiling of water, dissolution of sugar into water are some examples of physical changes.
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EBK EXPERIMENTAL ORGANIC CHEMISTRY: A M
- Table 11.9 (data) Observation Sample Original solution Heated solution Heated-then-cooled solutionarrow_forwardHeating a solid until it passes directly from the solid phase into the gaseous phase. Separating a liquid from an insoluble solid sediment by carefully pouring the liquid from the solid without disturbing the solid. The process of vapor returning to the solid phase without a liquid phase in between. Heating a mixture to vaporize a volatile liquid component to make the remaining component dry. Separating a solid from a liquid using a porous material, such as paper, charcoal, or sand, as a filter. Using a solvent to selectively dissolve one or more components from a solid mixture. Answer Bank extraction filtration decantation deposition sublimation evaporationarrow_forwardHowever, there are many other commercially purchased inorganic and organic compounds that people routinely used in their households (or in their everyday lives). A list of 19 chemicals with common names are written below. Find each of these items in your home or in a local grocery and take picture of the container (if you do not have access to all of them choose at least 12 of them) and then complete the table below. For #16 and 17 you choose any other house hold chemical and complete the table. • Inorganic compounds 1) table salt, 2) baking soda, 3) washing soda, 4) photographic fixer, 5) Epsom salt, 6) alum, 7) chalk, 8) corn starch, 9) sand, 10) active ingredient in toothpaste or cleansing agent and disinfectant, 11) decolorizing carbon Organic compounds Naming of organic compounds will be discussed in details in Lab 10 however there are still some simple organic compounds that you encounter at your home. Organic compounds are compounds that contain at least one carbon with one…arrow_forward
- 1. To determine the melting point of aspirin, Gerald placed the sample in a capillary tube tied to a thermometer and heated them in an oil bath. Which constitute the system and the surroundings? a.system: aspirin, thermometer, oil, alcohol lamp; surroundings: Gerald b.system: aspirin; surroundings: thermometer, oil, alcohol lamp c.system: aspirin, thermometer, oil; surroundings: alcohol lamp d. system: aspirin, thermometer; surroundings: oil, alcohol lamp 2. Which of the following processes is exothermic, given the following: N2(g) + 2O2(g) → N2O4(l) ΔHo = 9.67 kJ mol-1N2(g) + 2O2(g) → 2NO2(g) ΔHo = 67.70 kJ mol-1 a.2NO2(g) → N2O4(l) b.2N2(g) + 4O2(g) → 2N2O4(l) c.N2(g) + O2(g) → N2O4(l) +NO2(g) d.(1/2)N2(g) + O2(g) → NO2(g)arrow_forwardWhile all at the same temperature, which of these pure substances will have the largest vapor pressure? H. H. H. H H H H H-C-0-C-H H-C-C- C-H H-C-C-O-H H. H. H. H. H. H. dimethyl ether propane ethanol O All three will have the same vapor pressure O propane O ethanol o dimethyl etherarrow_forwardWhat is the relationship between vapor pressure at a temperature and its melting point so that sublimation can occur? What are the different phase changes involved in the purification using sublimation experiment?arrow_forward
- In addition to dispersion forces, what intermolecular forces are present in a solution between methanol and bromine? a. ion-dipole b. dipole-dipole c. ion-induced dipole d. dipole- included dipolearrow_forwardWhen performing a recrystallization of an impure solid, why is it important to allow the heated solution to cool slowly? Group of answer choices For the molecules of the pure solid to arrange in organized crystal lattices. To encourage solubility. To avoid the need for ice. To trap particles in the crystal lattice.arrow_forwardArrange in the correct order. 1. Distillation 2. Reflux Question 1 options: It is a process in which liquid is heated at its boiling point, evaporated and then condensed back into a separate container It is a process in which the condensate is heated at its boiling point and returned back to the liquid that the vapours originally came fromarrow_forward
- A mixture containing ethanol (bp: 78 °C), acetone (bp: 56 °C), and ether (bp: 36 °C) undergoes distillation. Which of the following is NOT TRUE? a. Acetone is more volatile than ethanol but less volatile than ether. b. Ether will be the first to be collected in the receiving flask. c. Ethanol will remain in the distilling flask when the mixture is distilled at 56°C. d. Ether molecules have the strongest IMFA among the three.arrow_forwardSample #1 has a lower vapor pressure than does Sample #2. The molecules are about the same size. Check all statements that apply to this situation. O Sample #1 has weaker IMFs O Sample #2 has weaker IMFs O Sample #1 is more polar Sample #2 is more polar O Sample #1 has more molecules in the gas phase O Sample #2 has more molecules in the gas phase O The IMFs for Sample #1 are easier to disrupt O The IMFs for Sample #2 are easier to disruptarrow_forwardDue to the fact that the liquid you used was a volatile one, it will not completely recondense. Some of the liquid remains in the vapor phase, even at room temperature. If you were able to correct for this by making the vapors recondense completely, would your final molar mass value be greater than, less than or the same as the value you determined? Explain your reasoning.arrow_forward
- World of Chemistry, 3rd editionChemistryISBN:9781133109655Author:Steven S. Zumdahl, Susan L. Zumdahl, Donald J. DeCostePublisher:Brooks / Cole / Cengage Learning