Laboratory Techniques in Organic Chemistry
4th Edition
ISBN: 9781464134227
Author: Jerry R. Mohrig, David Alberg, Gretchen Hofmeister, Paul F. Schatz, Christina Noring Hammond
Publisher: W. H. Freeman
expand_more
expand_more
format_list_bulleted
Question
Chapter 1, Problem 3Q
Interpretation Introduction
Interpretation:
The best method for heating ethanol should be explained.
Concept introduction:
Ethanol is an alcohol molecule that has the chemical formula
Expert Solution & Answer
Want to see the full answer?
Check out a sample textbook solutionStudents have asked these similar questions
A scientist tries to determine how much (NH4)2SO4 is needed to prepare a 50% soIution from fresh soIution using saturated (NH4)2SO4 soIution. But the scientists forgot that he already initially adjusted the solution to be at 10% saturation. Determine the new %saturation of the resuIting soIution.
A. 60
B. 55
C. 45
D. 50
If 80% of a desired compound is extracted into the organic phase in each step (leaving 20% in the aqueous layer), how many extractions are necessary to ensure that at least 99% of the compound has been recovered in the organic phase?
1 extraction
2 extractions
3 extractions
4 extractions
What potential future problems could be involved in instructing customers of craft breweries to adopt this most recent way from the very beginning?
Chapter 1 Solutions
Laboratory Techniques in Organic Chemistry
Knowledge Booster
Similar questions
- 3. Suppose you have a mixture of saturated aqueous sodium chloride (brine) and your 2-chloro-2-methylbutane product in a separatory funnel. Use densities to predict which phase will be the top layer in the funnel. a. 2-chloro-2-methylbutane (organic phase) b. saturated sodium chloride (aqueous phase) c. hard to predict since densities are both very close to 1.18 g/mL d. there would only be one phase since the substances are misciblearrow_forward1,4‐Dimethoxybenzene (0.642 g) was dissolved in 2.0 mL acetic acid in a 25 mL Erlenmeyer flask using heat from a hot plate. Once the solid dissolved, 1.0 mL tert‐ butanol was added, and the reaction mixture was cooled in an ice bath. Then 2.0 mL concentrated sulfuric acid was added in 2‐3 drop portions,stirring the mixture after each aliquot. After the addition, the flask was removed from the ice bath and allowed to sit at room temperature for 15 minutes. Then 1.0 mL water was added dropwise to dilute the acid and the reaction mixture was added to 40 mL cold water in a 100 mL beaker. The solid was vacuum filtered and washed with 5 mL cold water, giving 52 g filtrate. The product wasrecrystallized from 4.5 mL methanol, yielding 0.317 g purified 1,4‐di‐tert‐butyl‐2,5‐dimethoxy benzene (27.2% yield). What is the atom economy, e-factor, and effective mass yield?arrow_forwardIsopropanol is a good extraction solvent for plant pigments as it breaks down cell walls and is miscible with pigments. Can you be sure that you only extracted chlorophyll-a from your spinach leaf? If not, what else might have been extracted?arrow_forward
- explain solvent solvent interaction and solvent solute interaction in 10 pagesarrow_forwardWhat is the theoretical yield of T-butyl chloride formation from 12.4 mL T-butyl alcohol, 49 mL HCL? Please don't provide handwritten solutionarrow_forwardTrue or false 1.At melting point the equilibria exist between liquid and solid phase. 2.The mixture of solids which had eutectic point 108 C melted below 108 C. 3.The highest melting point temperature for the impure sample is higher than the pure sample. 4.Bronsted-Lawry acid base reaction can occur only in organic phase. 5.Weak acids are not ionized completely.arrow_forward
- Find the intermediates.show step-by-step solution.arrow_forwardPredict the products (if any) that will be formed by the reaction below. If no reaction occurs, write NR after the reaction arrow. Be sure to include the proper phases for all species within the reaction. Sn(s) + 2 AgNO₃(aq) →arrow_forwardWhich statement is true? Statement 1: Extraction is a technique used to separate compound/s of interest from the sample matrix or mixture. Statement 2: The distribution coefficient is the ratio of the equilibrium volumes of the two solvents.arrow_forward
- Melting point: 98-105 Percent yield: 60% did you successfully make pure product? Explain.arrow_forwardSaturated aqueous sodium chloride (d = 1.2 g/mL) is added to the followingmixtures in order to dry the organic layer. Which layer is likely to be on thebottom in each case?a. Sodium chloride layer or a layer containing a high-density organic compound dissolved in methylene chloride (d = 1.4 g/mL)b. Sodium chloride layer or a layer containing a low-density organic compound dissolved in methylene chloride (d = 1.1 g/mL)arrow_forwardyou and your lab partner attempt to isolate/purify your unknown acid from a complex mixture using steam distillation (recall that water boils at 100 °C). Which of the following pieces of laboratory equipment is best used as a heat source for this purpose? 1.) Bunsen burner 2.) Hot water bath 3.) Heating mantle 4.) Hot plate / Stirrerarrow_forward
arrow_back_ios
SEE MORE QUESTIONS
arrow_forward_ios
Recommended textbooks for you
- EBK A SMALL SCALE APPROACH TO ORGANIC LChemistryISBN:9781305446021Author:LampmanPublisher:CENGAGE LEARNING - CONSIGNMENT
EBK A SMALL SCALE APPROACH TO ORGANIC L
Chemistry
ISBN:9781305446021
Author:Lampman
Publisher:CENGAGE LEARNING - CONSIGNMENT