Part C: Determination of the alcohol content of unknown liquor Stretien Volume (mL) Sample ТИШТИНА 0.00% alcohol 10.0% alcohol 20.0% alcohol 40.0% alcohol 50.0% alcohol Unknown Mass (g) 1o podina ko 9.8919 9.7899 9.600 9 9.420 д % Alcohol content of the liquor 9.2155 9.5089 2VLELA CVOLION: MEAEK EVI OK DRA IVBOKY LOBAN ocen 10.00 10.00 10.00 10.00 10.00 10.00 Density (g/mL) 0.00% alcohol calculation: ися → о 0.99 во 0.99 To Z si doleW 120.00 supinubst sdi na LANG 411 bet [squardas: 0.97 0.94 in oil to notisalarisi 0.92 0.95
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- Part C: Determination of the alcohol content of unknown liquor St tiend Volume (mL) Sample ТИШТИНА 0.00% alcohol 10.0% alcohol 20.0% alcohol 40.0% alcohol 50.0% alcohol Unknown Mass (g) 1o podina ko 9.8919 9.7899 9.600 9 9.420 д % Alcohol content of the liquor_ 9.2155 9.5089 2VLELA CVOLION EAEK EVI OK DRA IVBOKY LOBAN ocen 10.00 10.00 10.00 10.00 10.00 10.00 Density (g/mL) 0.00% alcohol calculation: ися → о 0.99 во 0.99 Ino7 sm dolaW 120.00 supinubst sdi na LANG 411 be: [scordas: 0.97 0.94 in oil to notisalarisi 0.92 0.95Part C: Determination of the alcohol content of unknown liquor Stretien Volume (mL) Sample ТИШТИНА 0.00% alcohol 10.0% alcohol 20.0% alcohol 40.0% alcohol 50.0% alcohol Unknown Mass (g) 1o podina ko 9.8919 9.7899 9.600 9 9.420 д % Alcohol content of the liquor_ 9.2155 9.5089 2VLELA CVOLION EAEK EVI OK DRA IVBOKY LOBAN ocen 10.00 10.00 10.00 10.00 10.00 10.00 Density (g/mL) 0.00% alcohol calculation: ися → о 0.99 во 0.99 Ano 7 si dotaW 120.00 supirmbest sdi na LANG 411 be: [scpoidas: 0.97 0.94 in oil to notisalarisi 0.92 0.951-Pentanol to 1-bromopentane Chemicals: - 60ml Conc. Sulfuric Acid - 100ml Saturated Sodium bicarbonate - 65ml 1-Pentanol - 78g sodium bromide - Distilled water - 58.42g 1-Bromopentane 1-Pentanol Sodium Bromide Sulfuric Acid 1-Bromopentane Formula C5H12O NaBr H2SO4 C5H11Br MW (g/mol) 88.15 102.894 98.078 151.04 Density (g/mL) 0.811 3.21 1.84 1.218 Boiling point (*C) 138 1,396 337 130 NaBr(aq) + H2SO4(aq) -> NaHSO4(aq) + HBr(aq) CH3(CH2)4OH(aq) + H+ Br- (aq) CH3(CH2)4OH2 (aq) + Br-(aq) CH3(CH2)4OH2 (aq) + Br-(aq) CH3(CH2)4Br(aq) + H2O(aq) How do I calculate the percent yield and identify the limiting reagent?
- Unknown Mixture #1 Unknown Mixture #2 Sample caffeine ibuprofen aspirin acetaminoph en Distance to solvent front 14,70 cm 14,70cm 14.70cm1u.70 cm 1나,구 cm |14.구0cm 5. 70 cm 11.90 cm I.85cm Distance Spot(s) traveled 175 cm 13.75cm 11.9 5 cm 6.4 0 cm 13,75 cm 13.75 cm 38 78 1908 .8095 Calculated R:(s) 119 ,9354 812 9 43 S .9354 9354 #1:Aspirin an d lbuprofen Components of Unknowns #2: Ace taminophen, aspirin an d ibu profen D. Additional Exercises 1. Which of the substances tested is most polar? What parts of the structure of this substance is polar? The Sul 2. Which of the substance tested is most non-polar? What parts of the structure of this substance in non-polar?The alcohol content of hard liquor is normally given in terms of the “proof,” which is defined as twice the percentage by volume of ethanol (C2H5OH) present. Calculate the number of grams of alcohol present in 1.00 L of 75-proof gin. The density of ethanol is 0.798 g/mL. Round off to 4 sig. figures for all calculations made prior to final answer and the final answer should be in 3 sig. figures30 20 10 From the procedure 2. Assemble the simple distillation apparatus as generally shown in Figure SD.1 in the lab manual, ensuring that the thermometer bulb is aligned at, or slightly below, the Y in the distillation head. Each ground joint is greased by putting three or four stripes of grease lengthwise around the male joint and pressing the joint firmly into the other without twisting. 3. Attach a water condenser to the distillation head. 4. Remember, water goes in the bottom and out the top. Attach a clamp holder to the end of the drain tube to keep it weighted in the drain. Turn water to a trickle. If it is slowly draining, it is high enough. Begin a low flow of water through the condenser. 5. Place the set up on a heating/stir plate. 6. Turn on the hot plate to start heating the solution. Monitor the temperature and the boiling of the solution throughout the distillation process. 7. Record the temperature of the distillate when the first drops are recovered. 30.0 8. Adjust…
- Melting Point of Compounds and Mixtures Yes Melting point measurements Table 1. Melting point of pure compounds Complete melted temperature ("C) Start melting temperature (°C) Pure benzoic acid 123 126 Pure mandelic acid 117 124 Table 2. Melting point for mixtures of benzoic and mandelic acid Complete melted temperature (°C) Start melting temperature (°C) 80:20 mixture (benzoic acid:mandelic acid) 113 117 60:40 mixture (benzoic acid:mandelic acid) 100 109 40:60 mixture (benzoic acid:mandelic acid) 96 104 20:80 mixture (benzoic acid:mandelic acid) 107 113 Calculations and Analysis Determine the midpoint of the starting and completed melting temperatures. Use those temperatures to graph the melting points of the pure compounds and the mixtures. Table view List view Table 3. Melting point analysis Start melting temp ('C) Complete melted temp (°C) Midpoint of melting temp range (°C) Pure benzoic acid 123 126 80:20 mixture (benzoic acid:mandelic acid) 113 117 60:40 mixture (benzoic…12. Answer Only Refer to the following mixtures: Mixture A: Liquid and solid mixture Mixture B. Liquid mixture whose boiling points are similar. Mixture C. Liquid mixture with high boiling point. Mixture D. Heat sensitive liquid mixture. Which of the following distillation can be applied for Mixture D? vacuum distillation fractional distillation simple distillation none of these ———— This is defined as the temperature at which the vapor pressure of the liquid phase of a compound equals the external pressure acting on the surface of the liquid. solubility melting point boiling point flash point optical rotation —————— Predict the color change if 1% ferric chloride (yellowish solution) is added to a test tube containing a mixture of ethanol and pure acetyl salicylic acid. purple to yellow yellow to dark blue light blue to pink yellow to purple no color changeAnswer questions 1 and 2 according to the data given. Dater Weight of cream i: 326 kỳ. Table shows some data obtained directly from Lactascan instrument. Fat % SNF % Lacto- density 27.32 30.23 Raw milk 4.15 7.97 Skim milk 0.08 8.26 Q1. Calculate fat percent of creamn A) 46 B) 28 (C) 3D D) 0.046 آدرما 396 100 x Q2. Calculate efficiency of the cream separator. A) 100% B98% C) 97% D) 96% E) 87.2% amount 2500 L E) 0.28
- 2. Sodium Hypochlorite, NaOCI: 3. Sugar, C12H22011. 4. Eggshell, CaCO3: 5. Baking Soda, NaHCO3: B. Your classmate is wondering which of the following beverages has greater alcohol content. Compute its alcohol content and arrange the following beverages in ascending order (lesser alcohol content to greater one). A. GSM 40% @350mL C. Alfonso XII 36% @1.75L B. EmpeLight 27.5% @750mL D. Gran Matador 32.5% @700mL C. Solve the following problem. Show your complete solution. 1. The "fuel value" of the hydrogen - containing fuels depends on the mass percentage of hydrogen (H). Rank the following compounds in terms of their "fuel value" with 1 as the highest fuel value and 3 as the one with lowest fuel value: a.) Ethane (C2Hs), b.) Propane (CSHa), or c.) Ethanol (C2H5OH). 2. A bag of fertilizer marked 16-4-8 contains 16% N, 4% P and 8% K. What is the mass of nitrogen present in the 500g pack of NPK fertilizer?Could the following compound mixtures be separated by simple distillation? Explain why or why not? a. diethyl ether/ 1-butanol (b.p. 34.6 degrees celsius/ 117 degrees celsius) b. water/ethanol (b.p. 100 degrees celsius/ 78 degrees celsius)Cyclohexanol 10 ml Mass of cyclohexanol 9.62 g – 0.053 mol Theroretical yield cyclohexene–7.89g - ? mol Therotical mass of cyclohexene- Actual yield- 6.8ml –4.055 g –? mol Percent yield- 51.04% Boiling point of cyclohexene -83 degree Celsius Theroretical boling point -83 degree Celsius can i get some clarification pls