Identification of Unknown Petroleum Hydrocarbon (1)

QUESTION 11 Place the following chemical compounds in order from lowest to highest boiling point, where 1 is the lowest and 3 is the highest. This question requires a handwritten response (see below). For your handwritten submission: Explain the reasoning for your ranking with reference to the intermolecular force(s) present in pure samples of each compound Include sketches of each compound to support your explanations. ✓ Ethanoic acid OH ✓ Methoxyethane Butane

CHM 831A Lab 7 - 2021SP Q5. Calculate the amount of heat (kcal) released when 50.0 g of water at 100°C hits the skin and cools down to a body temperature of 37°C. Q6. Calculate the amount of heat (kcal) released when 50.0 g of steam at 100°C hits the skin and condenses. Q7. What is the amount of heat (kcal) when 50.0 g of steam hits the skin, condenses, and cools down to a body temperature of 37°C? Lab 7 pg. 8

You place a drop of each of the following substances on wax paper: water, hexane, 1-butanol, octane, and 1-pentenol. Which substance would be expected to form a drop with the smallest diameter on the wax paper? You may need to look up the structures of the molecules online.  Water Hexane 1-Pentenol 1-Butanol Octane

This graph shows how the vapor pressure of three liquids varies with temperature: 900 800 700 600 500 400 300 200 - octane - orthoxylene piperidine 100 100 110 120 130 140 temperature, °C Use the graph to answer the following questions: Which liquid is the most volatile? most volatile: choose one Which is the least volatile? least volatile: choose one octane: What is the normal boiling point of each liquid? Note: your answer must be within 1°C of the exact answer to be graded correct. orthoxylene: piperidine: Suppose a beaker of orthoxylene is put inside a sealed tank containing orthoxylene gas at 118. degree C and 737. torr. After ten minutes, will there be more liquid in the beaker, less liquid, or the same amount? more less the same vapor pressure, torr

Rank the following compounds in decreasing order of boiling point. OIII >1> IV > II OII > IV > III > I O III >IV>I>II IV>1 >> III |>|||>|| >IV HO. 111 OH وكرة

Preparation of 1-bromobutane (n-Butyl Bromide) In a 250 ml round-bottomed flask, place 13.5 g (0.13 mol) of sodium bromide, 15 mL of water and 10 mL (0.11 mol) n-butyl alcohol. Cool the mixture in an ice bath and slowly add 12 ml of concentrated sulfuric acid in 2 ml portions, while swirling and cooling the flask. • Add a few boiling stones and attach the reflux condenser. Connect the gas trap (dilute NaOH) to the reflux condenser to absorb any escaping HBr gas (Figure 4, page 9). • Heat gently until boiling begins and then reflux for 30 minutes noting the formation of an upper layer of alkyl bromide. • Allow the mixture to cool and reassemble the apparatus for simple distillation. Distil the mixture into an ice-cooled flask until no more waterinsoluble droplets come over. At this stage the temperature reaches 110- 15 °C. • Transfer the distillate to a 100 mL separatory funnel, add about 15 ml water, stopper and shake. Drain the lower layer of butyl bromide into a flask and discard the…

Which of the following compounds has the lowest boiling point? 2 He H 10 thim bem temn megin] 10 Li Be C N F Ne monphone 15 arge 11 12 13 14 16 17 18 Na Mg AI Si ci Ar 26 tromine 35 19 20 21 22 23 24 25 27 28 29 30 31 32 33 34 к Са Sc Ti vCr Mn Fe Co Ni Cu Zn Ga Ge As Se Br Kr etem 41 theum p m 46 ede 37 38 39 40 42 43 44 45 47 48 49 50 52 53 54 Rb Sr Zr Nb Mo Tc Ru Rh Pd Ag Cd In Sn Sb Te Хе 112 bert hath than hemth abe 55 56 57-70 71 72 73 74 75 76 77 70 79 82 83 85 Cs Ba Lu Hf Ta w Re Os Ir Pt Au Hg TI Pb Bi Po At Rn 87 85-102 103 104 105 106 107 108 100 110 111 112 114 Fr Ra ** Lr Rf Db Sg Bh Hs Mt Uun Uuu Uub Uuq 223 61 65 67 70 *Lanthanide series La Ce Pr Nd Pm Sm Eu Gd Tb Dy Ho Er Tm Yb 174 **Actinide series 91 92 93 94 95 96 97 99 100 101 102 Ac Th Pa U Np Pu Am Cm Bk Cf Es Fm Md No pe pe Select one: O a. CH;CH2CH;CH2OH O b. C(CH3)4 Oc CH3CH2CH2CH2F d. (CH;);COH O e. CH;CH2CH;CH2CH3

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This graph shows how the vapor pressure of three liquids varies with temperature: 900 - 800 - 700- 600 500 400. 300 ethylbenzene pyridine isobutyl alcohol 200 100- +++H HHH HHHH 140 100 110 120 130 temperature, °C Use the graph to answer the following questions: Which liquid is the most volatile? most volatile: choose one Which is the least volatile? least volatile: choose one ethylbenzene: What is the normal boiling point of each liquid? Note: your answer must be within 1°C of the exact answer to be graded correct. pyridine: isobutyl alcohol: Suppose a beaker of pyridine is put inside a sealed tank containing pyridine gas at 112. degree C and 692. torr. After ten minutes, will there be more liquid in the beaker, less liquid, or the same amount? O less the same vapor pressure, torr

Please identify the compound with the lowest boiling point? HO. IV %3D ON OII

Rank the following organic compounds in order of decreasing their boiling points: CH3CH2COOH CH3COOCH3 CH3CH2CH2OH CH3CH2CONH2 || II IV Select one: ||>l>I||>IV l>IV>III>I| IV>l>II>III IV>l>IIl>I|

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This graph shows how the vapor pressure of three liquids varies with temperature: 900 800 700 600 500 400 300 200 octane - isobutyl alcohol ethylbenzene 100 03 100 110 120 130 140 temperature, °C Use the graph to answer the following questions: Which liquid is the most volatile? most volatile: choose one Which is the least volatile? least volatile: choose one octane: °C What is the normal boiling point of each liquid? Note: your answer must be within 1°C of the exact answer to be graded correct. isobutyl alcohol: ethylbenzene: Suppose a beaker of isobutyl alcohol is put inside a sealed tank containing isobutyl alcohol gas at 103. degree C and 900. torr. After ten minutes, will there be more liquid in the beaker, less liquid, or the same more less amount? the same vapor pressure, torr

Intermolecular Forces, unit conversions & Partial, total pressure

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This graph shows how the vapor pressure of three liquids varies with temperature: 900 800 700 600 500 400 300 - cyclohexanone benzaldehyde dimethyl sulfoxide 200 100 150 160 170 180 190 temperature, °C Use the graph to answer the following questions: Which liquid is the most volatile? most volatile: choose one Which is the least volatile? least volatile: choose one cyclohexanone: What is the normal boiling point of each liquid? Note: your answer must be within 1°C of the exact answer to be graded correct. benzaldehyde: dimethyl sulfoxide: | °C Suppose a beaker of benzaldehyde is put inside a sealed tank containing benzaldehyde gas at 169. degree C and 704. torr. After ten minutes, will there be more liquid in the beaker, less liquid, or the same amount? more less the same vapor pressure, torr

Which of the following has the highest boiling point? ethane, CH3CH3 formaldehyde, HCHO dimethyl ketone, CH3COCH3 ethyl alcohol, CH3CH2OH acetic acid, CH3COOH

101 Chem101 Pt Periodic Table - Ptable Answered: Using the data in the cf2o lewis structure - Google Sea X O X A app.101edu.co Question 16 of 34 Submit Liquid butane is used in cigarette lighters. The boiling point of butane at 1 atm pressure is -1.0 °C and its AHvap is 22.44 kJ/mol. What is the pressure (in atm) of the butane in the lighter at 25.0 °C? atm 1 2 4 C 7 8 9. +/- х 100 8:03 PM 12/13/2021 ...

This graph shows how the vapor pressure of three liquids varies with temperature: 900 800 700 600 500 400 300 200 octane - pyridine orthoxylene 100 0 100 110 120 130 140 temperature, °C Use the graph to answer the following questions: Which liquid is the most volatile? most volatile: choose one Which is the least volatile? least volatile: choose one °C octane: What is the normal boiling point of each liquid? Note: your answer must be within 1°C of the exact answer to be graded correct. pyridine: orthoxylene: more Suppose a beaker of pyridine is put inside a sealed tank containing pyridine gas at 112. degree C and 858. torr. After ten minutes, will there be more liquid in the beaker, less liquid, or the same amount? less the same vapor pressure, torr

How much heat is given off by 5.0 g of steam at 100oC as it condenses and cools to 20oC? 2.70 kcal   2.80 kcal 2.89 kcal 3.10 kcal

What is a claim that can be made about the boiling point of similar chemicals that have carbon? O The more carbons in the chain the lower the boiling point. O The more carbons in the chain the higher the boiling point. O The number of carbons in the chain does not affect the boiling point. O The carbon compounds do not boil at all.

Of the following substances, __________ has the highest boiling point.     CH3CH2CH2CH2OH   C2H6   N2   F2   CH3CH2OH

Arrange carbon tetrafluoride (CF4), ethyl methyl sulfide (CH3SC2H5), dimethyl sulfoxide [(CH3)2S=O], and 2-methylbutane [isopentane, (CH3)2CHCH2CH3] in order of decreasing boiling points. Answer: dimethyl sulfoxide (boiling point = 189.9°C) > ethyl methyl sulfide (boiling point = 67°C) > 2-methylbutane (boiling point = 27.8°C) > carbon tetrafluoride (boiling point = −128°C) SHOW HOW IT IS SOLVED

This graph shows how the vapor pressure of three liquids varies with temperature: 900 800 700 600 500 400 300 - pyridine orthoxylene ethylbenzene 200 100 100 110 120 130 140 temperature, °C Use the graph to answer the following questions: most volatile: choose one Which liquid is the most volatile? Which is the least volatile? least volatile: choose one °C pyridine: What is the normal boiling point of each liquid? Note: your answer must be within 1°C of the exact answer to be graded correct. °C orthoxylene: °C ethylbenzene: Suppose a beaker of orthoxylene is put inside a sealed tank containing orthoxylene gas at 125. degree C and 431. torr. After ten minutes, will there be more liquid in the beaker, less liquid, or the same O more O less O the same amount? vapor pressure, torr

From the following compounds, which of the following has the highest Solubility in Water? From the following compounds, which of the following has the highest Melting Point? Select your answer. Ethanol Octanol Decanol Pentanol

Of C2H5OH and C3H5(OH)3 the one expected to have the higher vapor pressure is ________, and the one expected to have the higher boiling point is ________. Express your answers as chemical formulas separated by a comma.

Which has the highest boiling point?

Predict the relative boiling points for the following molecules, putting the highest at the top of the list. Molecules (6 items) (Drag and drop into the appropriate area) Boiling Points CH3CH(CH3)CH2CH2CH3 1 CH,CH2NHCH,CH,CH,CH, CH2(OH)CH2CH2CH;(OH) N(CH2CH3)3 CH2(NH)CH,CH,CH2(NH2) CH,C(CHa),CH,CH3 3. 2.

Let's put all of this together! Which of the three substances would you predict to be more soluble in water? A Ethanol (CH3CH₂OH) B C Dimethyl Ether (H3COCH3) Propane (CH3CH₂CH3)