A- The product may not be benzoic acid. B- The benzoic acid may still contain hydrochloric acid and sodium chloride that have not been washed out. C- The benzoic acid may not have dried completely yet. D- The first three options are all

A- The product may not be benzoic acid. B- The benzoic acid may still contain hydrochloric acid and sodium chloride that have not been washed out. C- The benzoic acid may not have dried completely yet. D- The first three options are all

Chemistry: The Molecular Science

5th Edition

ISBN:9781285199047

Author:John W. Moore, Conrad L. Stanitski

Publisher:John W. Moore, Conrad L. Stanitski

Chapter10: Fuels, Organic Chemicals, And Polymers

Section: Chapter Questions

Problem 107QRT

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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. x10
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 미
2. The table below has IUPAC names and boiling points for four of the organic compounds discussed in the Kahn Academy video on simple and fractional distillation. Draw the structure of each compound, and label the polar and nonpolar groups with the type of attractive force the molecules can use to interact with one another. acetone (2-propanone); boiling point = 56 °C Polar dipoit-dipole dispersion, nonpolar cyclohexane; boiling point = 81 °C 가~ -nonpolar, dispersion ethanol; boiling point = 78 °C Polar, hydrogen (OH) bonding nonpolar acetic acid (ethanoic acid); boiling point = 118 °C E polar, dipole-dipole honpolar, OH 7-polar, hydrogen bonding dispersion Explain the relative boiling points of these compounds in terms of the attractive forces and masses of each molecule.
1. Alkane Boiling Point Trends Molecular Formula Hydrocarbon Name Boiling Point (°C) CSH12 C6H14 CH16 C3H18 2. Organic Compound Boiling Points Compound Name Total Number of Carbons Boiling Point (°C) Propane 3 -42 2-Propanol Propanal Propanone Ethyl methanoate Propanoic Acid Methoxyethane 3. Organic Compound Solubility Compound Name Total Number of Carbons Solubility in Water Oil Insoluble Ethanol 1-pentanol 1-decanol methoxymethane Propanoic Acid Propyl ethanoate Propanamine 3. Amine Boiling Points Compound Name Total Number of Carbons Boiling Point (°C) Propanamine N-methylethanamine N,N-dimethylethanamine
6. Suppose you have a mixture of water and your 2-bromo-2-methylbutane product in a separatory funnel. Use densities to predict which phase will be the top layer in the funnel. a. 2-bromo-2-methylbutane (organic phase) b. water (aqueous phase) c. there would only be one phase since the substances are miscible
MODIFIED TRUE OR FALSE Write the correct word to make the statement true if it's false 1. The formation of black smoke upon combustion of hydrocarbons indicates incomplete combustion which means that the sample has a [low] C to H ratio. 2. In steam distillation, the desired substance decomposes and is obtained at a temperature [higher] than its actual boiling point.
The 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
A student has a mixture of two possible compounds. The student performs recrystallization to separate the two compounds. The student decides to identify the separated compound by melting point. The student’s compound has a melting range of 108-109 °C using a ramp rate of 2°C/min. The student’s partner believes that they isolated compound 2, while the student thinks they have compound 1. Choose the best answer to go with this scenario. Compound 1 Literature Melting point: 111 °C Compound 2 Literature Melting point: 104 °C A) It is correct that they definitely have compound 2. B)The students have neither of the two compounds. C) The ramp rate is too high so the experimental melting range is not accurate. D) The students likely have compound 2, but should do a mixed melting range experiment with a standard of compound 2 to be certain. E) They did not separate the compounds properly, and it is still a mixture. F) The students likely have compound 1, but should do a mixed melting range…
The answer to c is 1.58g. Please answer question on bottom.
Why do you need to add sodium carbonate in the extraction process of tea bags?
The dose makes the poison. Calculate the total volume of pure ethanol in just one Ethanol is highly toxic if it is consumed in large quantities. 23.5 fl. oz. (695 mL) can of American malt liquor, which is 12% volume per volume (v/v) ethanol. Although it is the second least toxic of the five alcohols discussed in this case, the ingestion of large quantities of Enter your answer in milliliters. ethanol is not safe. One serious problem with ethanol consumption is how the quantity is conveyed to the consumer. For example, American malt liquor can be sold pure ethanol: mL in 23.5 fl. oz. (695 mL) cans and is 12% volume per volume (v/v) ethanol. Although these cans are labeled as containing multiple servings, many young people consider one can to be a single serving. Drinking two cans of this beverage can result in an accidental overdose of ethanol. Two cans may not seem like much until you do the math.
Compound A has a melting point range of 78-80 ºC and compound B has a melting point range of 80-82 ºC. An unknown compound X is found to have a melting point range of 79-81 °C. Compound X and compound A are mixed together and mixed melting point analysis gives a range of 65-74 ºC . Which of the following statements is definitely true? Compound X is not pure. Compound X is compound A. Compound X is compound B. Compound X is not compound A. Compound X is not compound B.