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14. The Density of Chloroform-1.4832g/ml, Nitroglycerin= 1.6g/ml, water= 0.9982 and Toluene- 0.8669. If Maurice, Mckoy and...
Laboratory Date Name TA Experiment 2- Post- lab Questions I. Chloroform and cyclohexane are organic liquids...
Laboratory Date Name TA Experiment 2- Post- lab Questions I. Chloroform and cyclohexane are organic liquids that are insoluble in water (see Table 2.2), and this causes two distinct liquid phases, an organic phase and a water phase, to form when these organic liquids are mixed with water. However, in a chloroform/water mixture, the water phase is on the top and the organic chloroform phase is on the top, whereas in a cyclohexane/water mixture, the water phase is on the...
2. In attempting to calculate the density of chloroform, CHCl3, Riley determines the following densities: 1.30...
2. In attempting to calculate the density of chloroform, CHCl3, Riley determines the following densities: 1.30 g/mL, 1.35 g/mL, 1.32 g/mL, 1.23 g/mL, 1.13 g/mL, and 1.39 g/mL. a. Calculate the average density of chloroform from his data. b. If the accepted density of chloroform is 1.48 g/mL, calculate the percent error. C. Was Riley's data accurate? Was the data precise? Explain your reasoning. Experiment 1: Determination of the Density of Water and nft page 14 3. For each of...
5. Consider these properties of chloroform boiling point: 61°C molecular weight: 119.37 g/mole density: 1489 g/ml...
5. Consider these properties of chloroform boiling point: 61°C molecular weight: 119.37 g/mole density: 1489 g/ml Cloroform and water are mutually insoluble: they form two layers w hen mixed. wso ml. of water and S0 ml of chloroform are mixed, which layer is on top? Whs? o. We want to convert O.30 moles of phenol into 2.4.6-trinitrophenol using .0 M HNO How many mls of this nitric acid solution should we use? Show your work 7. Consider this reaction CH...
5. The densities of some liquids are given below. Liquids Density (g/mL) Water 1.0 Carbon tetrachloride...
5. The densities of some liquids are given below. Liquids Density (g/mL) Water 1.0 Carbon tetrachloride 1.6 Mercury 13.6 0.65 a) A graduated cylinder is filled with approximately 10 mL of each liquid. Draw and label the layers of the liquid in the graduated cylinder. b) If you drop a diamond (density = 3.5 g/mL) into the graduated cylinder filled with the above liquids, in what layer would it be found? Illustrate. CHEM 40 LAB MANUAL 2019-2020 Page 61
2. When a neutralization reaction was carried out using 100.0 ml of 0.7890M NH3 water and...
2. When a neutralization reaction was carried out using 100.0 ml of 0.7890M NH3 water and 100.0 ml of 0.7940M acetic acid, AT was found to be 4.76 "C The specific heat of the reaction mixture was 4.104 -1K-1 and its density was 1.03 g ml 1. The calorimeter constant was 3.361 K-1 1) Calculate AH neutan for the reaction of NH3 and acetic acid 06) At the end of the experiment, it was discovered that the thermometer had not...
at 15.0°C 20.0°C, 22.0°C, 25.0°C, Post-Laboratory Questions 1. Write down the values for the density of...
at 15.0°C 20.0°C, 22.0°C, 25.0°C, Post-Laboratory Questions 1. Write down the values for the density of water at 15.0°C, 20. and 28.0°C. a. Compare the values of the density of water at the above temp temperature affect density? If so, state how. Explain your rease Fat the above temperatures. Does b. Would temperature be a significant source of error for this experiment? Explain your reasoning. 2. In attempting to calculate the density of chloroform, CHCl3, Riley determines the following densities:...
1. Read about electrophilic aromatic substitutions reactions in general. You need to be familiar with the...
1. Read about electrophilic aromatic substitutions reactions in general. You need to be familiar with the mechanism. Louden text (if using) Chapter 16 sections 16.4 and 16.5. Ask your lecture professor which chapters this correlates to if you are using a different text. 2. Write the structure, hazards, and molecular weight for all the reactants and products. Table 1. Chemical Information for Reactants and Products. Compound MW (g/mol) Density (g/mL) Hazrads nitric acid 63.01 1.513 corrosive, oxidizer Sulfuric acid 98.075...
SN2 Reaction CH,CH2CH2CH2-O H-Br CH CH2CH2CH2 Br H,O Hydrobromic acid 1-butanol 1-bromobutane Water n-butyl alcohol n-butyl...
SN2 Reaction CH,CH2CH2CH2-O H-Br CH CH2CH2CH2 Br H,O Hydrobromic acid 1-butanol 1-bromobutane Water n-butyl alcohol n-butyl bromide Questions: 1.) Upon cooling the reaction mixture, salts will form and precipitate. Draw the structures of these salts. ing work un the alkyl halide will invert. This means that prior to the wetem 1 J: NaOH naveDcou-an 5.) If n-butyl chloride (1-chlorobutane) with a density of 0.89g/ml were prepared in lieu of n-butyl bromide, would you expect it to be the top or...
9. Then add slowly while mixing 1 mL of saturated sodium bicarbonate solution (NaHCO3) -IT WILL...
9. Then add slowly while mixing 1 mL of saturated sodium bicarbonate solution (NaHCO3) -IT WILL BUBBLE! Add additional drops of saturated sodium bicarbonate solution with mixing until no additional bubbling occurs Congratulations! You have just made your first ester. Now you want to separate your ester product from the other stuff in the reaction mixture. CTQ3 Sodium bicarbonate is a base. How will it interact with any carboxylic acid molecules still present in your reaction mixture? 10. Add 1mL...
8. What is the density (g/mL) of a solid with mass of 4.75 g and a...
8. What is the density (g/mL) of a solid with mass of 4.75 g and a volume of 6.20 mL (10pts)? (1) 1.31 (2) 0.95 (3) 0.77 (4) 1.25 9. What is the mass (g) of a 275 ml solid with a specific gravity of 1.75 (10pts)? (1) 541.2 (3) 157.1 (2) 256.7 (4) 481.3 10. A patient needs 0.5 grams of medication two times per day. How many 250 mg tablets must he take per day (10pts)? (1) (3)...
Laboratory Date Name TA Experiment 2- Post- lab Questions I. Chloroform and cyclohexane are organic liquids that are insoluble in water (see Table 2.2), and this causes two distinct liquid phases, an organic phase and a water phase, to form when these organic liquids are mixed with water. However, in a chloroform/water mixture, the water phase is on the top and the organic chloroform phase is on the top, whereas in a cyclohexane/water mixture, the water phase is on the...
2. In attempting to calculate the density of chloroform, CHCl3, Riley determines the following densities: 1.30 g/mL, 1.35 g/mL, 1.32 g/mL, 1.23 g/mL, 1.13 g/mL, and 1.39 g/mL. a. Calculate the average density of chloroform from his data. b. If the accepted density of chloroform is 1.48 g/mL, calculate the percent error. C. Was Riley's data accurate? Was the data precise? Explain your reasoning. Experiment 1: Determination of the Density of Water and nft page 14 3. For each of...
5. Consider these properties of chloroform boiling point: 61°C molecular weight: 119.37 g/mole density: 1489 g/ml Cloroform and water are mutually insoluble: they form two layers w hen mixed. wso ml. of water and S0 ml of chloroform are mixed, which layer is on top? Whs? o. We want to convert O.30 moles of phenol into 2.4.6-trinitrophenol using .0 M HNO How many mls of this nitric acid solution should we use? Show your work 7. Consider this reaction CH...
5. The densities of some liquids are given below. Liquids Density (g/mL) Water 1.0 Carbon tetrachloride 1.6 Mercury 13.6 0.65 a) A graduated cylinder is filled with approximately 10 mL of each liquid. Draw and label the layers of the liquid in the graduated cylinder. b) If you drop a diamond (density = 3.5 g/mL) into the graduated cylinder filled with the above liquids, in what layer would it be found? Illustrate. CHEM 40 LAB MANUAL 2019-2020 Page 61
2. When a neutralization reaction was carried out using 100.0 ml of 0.7890M NH3 water and 100.0 ml of 0.7940M acetic acid, AT was found to be 4.76 "C The specific heat of the reaction mixture was 4.104 -1K-1 and its density was 1.03 g ml 1. The calorimeter constant was 3.361 K-1 1) Calculate AH neutan for the reaction of NH3 and acetic acid 06) At the end of the experiment, it was discovered that the thermometer had not...
at 15.0°C 20.0°C, 22.0°C, 25.0°C, Post-Laboratory Questions 1. Write down the values for the density of water at 15.0°C, 20. and 28.0°C. a. Compare the values of the density of water at the above temp temperature affect density? If so, state how. Explain your rease Fat the above temperatures. Does b. Would temperature be a significant source of error for this experiment? Explain your reasoning. 2. In attempting to calculate the density of chloroform, CHCl3, Riley determines the following densities:...
SN2 Reaction CH,CH2CH2CH2-O H-Br CH CH2CH2CH2 Br H,O Hydrobromic acid 1-butanol 1-bromobutane Water n-butyl alcohol n-butyl bromide Questions: 1.) Upon cooling the reaction mixture, salts will form and precipitate. Draw the structures of these salts. ing work un the alkyl halide will invert. This means that prior to the wetem 1 J: NaOH naveDcou-an 5.) If n-butyl chloride (1-chlorobutane) with a density of 0.89g/ml were prepared in lieu of n-butyl bromide, would you expect it to be the top or...
9. Then add slowly while mixing 1 mL of saturated sodium bicarbonate solution (NaHCO3) -IT WILL BUBBLE! Add additional drops of saturated sodium bicarbonate solution with mixing until no additional bubbling occurs Congratulations! You have just made your first ester. Now you want to separate your ester product from the other stuff in the reaction mixture. CTQ3 Sodium bicarbonate is a base. How will it interact with any carboxylic acid molecules still present in your reaction mixture? 10. Add 1mL...
8. What is the density (g/mL) of a solid with mass of 4.75 g and a volume of 6.20 mL (10pts)? (1) 1.31 (2) 0.95 (3) 0.77 (4) 1.25 9. What is the mass (g) of a 275 ml solid with a specific gravity of 1.75 (10pts)? (1) 541.2 (3) 157.1 (2) 256.7 (4) 481.3 10. A patient needs 0.5 grams of medication two times per day. How many 250 mg tablets must he take per day (10pts)? (1) (3)...
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