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How to recognize in a phase diagram the points where peritectic, monotectic, and eutectic transformations or reactions occur.
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- Briefly describe a eutectic system.The disinfection of drinking water to control microbial contaminants can form chemical disinfection byproducts. These compounds result from the reaction of chlorine with naturally occurring organic matter (the dissolved molecules that give natural water the yellow-greenish color). One class of disinfection byproducts is the malodorous and unpalatable chlorophenols. 2,4-dichlorophenol is one compound of this class. a) Calculate the vapor pressure p*L of 2,4-dichlorophenol at 60 °C using Tb and structural information only OH .CI M, = 163.0 g/mol Tm = 43.7 °C Tp = 213.0°C %3D %3D %3DThe boiling points for the compounds are 118 °C and 35 °C respectively. The solubility for both compounds is the same (8g/100g water). Explain this observation for (i) boiling point disparity; (ii) solubility similarity H-bonds form in diethyl ether; n-butyl alcohol forms H-bonds in water H-bonds form in n-butyl alcohol; diethyl ether forms H-bonds in water H-bonds in n-butyl alcohol; Both compounds form H-bonds in water O Both compounds form H-bonds; Both compounds form H-bonds in water
- TRUE OR FALSE A student synthesizing an organic compound from 2 starting materials. it is determined that starting material X is in excess while starting material Y is the limiting reagent. It is imperative that the measurements of Y are precise in order to determine the correct number of significant figures in the calculation of the theoretical yield Distillation is used in organic chemistry to both purify a compound and determine its approximate boiling point.Benzene-toluene equilibrium is often approximated as αBT = 2.34. Generate the y-x diagram for this relative volatility. Also, generate the equilibrium data using Raoult’s law, and compare your results to these.Question 4 (b). Chlorobenzene, also known as monochlorobenzene, benzene chloride, chlorobenzol, and phenyl chloride, is used in the production of chloronitrobenzene and diphenyl ether, in rubber intermediates; as a solvent in adhesives, paints, waxes, and polishes; and as an inert solvent. Ms Bontle Makgatho, a Bsc I student at Sefako Makgatho Health Sciences University is doing an internship at SKY PAINT, a company based in Gezina, Pretoria North. One of her duties involves the synthesis of Chlorobenzene using benzene as a starting material. (i). Draw a step wise mechanism for the synthesis of chlorobenzene using Benzene as the starting material (ii). Benzene is a well-known aromatic compound, what are the characteristic of an aromatic compound (list four) Save and Submit to save and submit. Click Save All Answers to save all answers.
- When 1.54 of a certain molecular compound X are dissolved in 55. g of benzonitrile (c,H,CN), the freezing point of the solution is measured to be - 17.8 °C. Calculate the molar mass of x. If you need any additional information on benzonitrile, use only what you find in the ALEKS Data resource. Also, be sure your answer has a unit symbol, and is rounded to the correct number of significant digits. x10Can you fill the rest of the chart pleaseThe position of the phases in the separatory funnel (whether the top or bottom phase) is dependent on the relative densities of the solvents. Complete table 1 to indicate whether each of the solvents will be on the top or bottom layer. Table 1. Solubility properties of common organic solvents. Solubility in H20 (g/L, 20-25°C) 9.5 x 10-3 1.79 8.09 17.5 Solubility of H20 (g/L, 20-25°C) 0.31 Phase layer Density (g/mL, 25°C) 0.661 Liquid hexane benzene chloroform 0.76 0.87 1.76 15 170 0.877 dichloromethane diethyl ether 1-butanol 60.5 73 0.3 1.489 1.327 0.713 0.81 0.83 1-octanol 49 ethyl acetate 83 33 0.902
- You need to purify 0.8 grams of an impure sample of trans-cinnamic acid. After the purification is completed you isolate 0.57 grams of trans-cinnamic acid and record a melting point range of 129-132 °C. Cinnamic Acid has a solubility in ethanol of 13.9 g/100 ml at 10 °C and a solubility in water of 0.055 g/100 ml at 25 °C. (a) Explain why the recrystallization of trans-cinnamic acid must use a mixed solvent system. Please explain why the sample couldn't be successful recrystallized in ethanol alone. Calculations should be used to support your answer. (b) Calculate the % recovery and the % error for the melting point.When 184. mg of a certain molecular compound X are dissolved in 85. g of formamide (NH,COH ), the freezing point of the solution is measured to be 1.7 °C. Calculate the molar mass of X. If you need any additional information on formamide, use only what you find in the ALEKS Data resource. Also, be sure your answer has a unit symbol, and is rounded to the correct number of significant digits. Ox10 미Rank the following components in order of decreasing volatility: butane, n-pentane, iso-pentene (e.g., 3-methyl-1-butene), isoprene, pentanol? Briefly explain your answer.