Macroscale and Microscale Organic Experiments
7th Edition
ISBN: 9781305577190
Author: Kenneth L. Williamson, Katherine M. Masters
Publisher: Brooks Cole
expand_more
expand_more
format_list_bulleted
Concept explainers
Videos
Textbook Question
Chapter 7, Problem 6Q
To isolate benzoic acid from a bicarbonate solution, it is acidified with concentrated hydrochloric acid, as in experiment 1. What volume of acid is needed to neutralize the bicarbonate? The concentration of hydrochloric acid is expressed in various ways on the inside back cover of this laboratory manual.
Expert Solution & Answer
Trending nowThis is a popular solution!
Students have asked these similar questions
REAGENT AMOUNTS In this section, you must record the actual amounts and volumes of reagens use
in the lab.
090
ml
Volume of methyl benzoate:
mmol
Equivalent to a molar amount of:
30 1.0
ml
Volume of concentrated Nitric acid (16 M = 16 mol/L):
Equivalent to a molar amount of :
mmol
Volume of concentrated Sulfurie acid acid (18 M = 18 mol/L):
3.0
ml
Equivalent to a molar amount of:
mmol
0.90 mL IL
=0.0009 L
lo0omL
Cinnamon is made up of a mixture of many compounds. Cinnamaldehyde is the component responsible for cinnamon flavor. Several of these compounds are also a potent antimicrobial compounds present in essential oils. The following results were obtained for known concentrations of three of the compounds.
Concentration (mg sample/200 uL)
Cinnamaldehyde
Eugenol
Thymol
0.50
0.4
0.65
1.8
0.75
1.0
0.8
1.10
1.2
1.25
2.0
1.30
3.0
1.50
1.5
1.90
3.1
2.0
4.6
2.50
4.0
5.8
Determine the calibration curve equations for each component including regression.
which component has the highest calibration sensitivity?
A sample containing the three essential oils in part b gave the peak areas relative to the internal standard of cinnamaldehyde 2.6, eugenol 0.9 and thymol 3.8. Determine the concentration of each of the oils in the sample and the standard deviations.
Why are alcoholic solutions used in the hydroxamic acid test for esters?
Chapter 7 Solutions
Macroscale and Microscale Organic Experiments
Knowledge Booster
Learn more about
Need a deep-dive on the concept behind this application? Look no further. Learn more about this topic, chemistry and related others by exploring similar questions and additional content below.Similar questions
- Explain why benzocaine precipitates during the neutralization.arrow_forwardGeneral, Organic and Biochemistry -Laboratory Manual 2. A student was titrating pure hydrochloric acid of unknown molarity. He forgot to take the initial volume reading for the NaOH addition in his buret and decided to assume it was 0.00 mL. His final reading on the NaOH buret was 23.45 mL, and the volume of hydrochloric acid used for titration was 25.00 mL. The molarity of the NaOH is 0.120 M. his data. Show your work: (HINT: This is a very Calculate the molarity of HCl based similar procedure for calculating excess HCI acid. Remember for the last step that molarity equals mol/L) а.arrow_forwardCould hydrochloric acid be an acceptable substitute for the acid used in dehydration reaction? explain whyarrow_forward
- Pertinent General Reactions. Bayer’s oxidation: Chomic acid oxidation: Lucas test: Ferric Chloride Test:arrow_forward3. Consider the following lists of solutes and solvents. Using the general guideline of "like dissolves like" and the concept of polarity, determine which solute will dissolve best in which solvent. Solvents H₂O bromomethane octane Solutes propane ethanoic acid heptan-1-olarrow_forwardURIC ACID vs. CYSTINE II. Complete the table. Choose the answer from the box below. URIC ACID CYSTINE Color Solubility in Ammonia Solubility in HCl Birefringence (ability to refract light in 2 directions) Cyanide-nitroprusside reaction Positive Insoluble Birefringent Soluble Not Birefringent Yellow-brown Soluble Negative Soluble Colorlessarrow_forward
- 2. What reaction occurs when sodium hydroxide is added to the stearic acid in cyclohexane and water? How does this change the solubility of cyclohexane in water? Does HCI reverse this reaction and if so why? Does sodium chloride have the same type of behavior as stearic acid or is it different? Explain why these two solutes are the same or different.arrow_forwardSynthesis of Benzoic Acid Is the reaction between sodium benzoate and hydrochloric acid exothermic or endothermic? What type of reaction is this? What are the products? Why is ice cold water rather than room temperature or warm water used to wash the remainder of the benzoic acid out of the beaker?arrow_forwardJojoba oil is the liquid produced in the seed of the Simmondsia Chinensis (jojoba) plant, a shrub, which is native to southern Arizona. The main component is gondoic acid and the structure is shown below: From the structure of gondoic acid, what properties do you think it gives the hand cream? Explain.arrow_forward
- 5. Salicylic acid and aspirin are BOTH white crystalline solids. a) Briefly explain (in terms of functional groups) how the iron (III) chloride test will help you confirm that you successfully converted salicylic acid to acetylsalicylic acid. b) What is the other method you'll use to confirm the identity (and purity) of your acetylsalicylic acid product?arrow_forwardThis substance dissolves in organic ether POLAR SUBSTANCEarrow_forwardHow would each of the following errors affect the experimental value of your molarity of acetic? Would your Molarity value be too high, too low, or unaffected? Explain your answer. if you titrated your acid sample to a bright pink rather than faint pink endpoint? if your "acetic acid" buret was still wet inside with deionized water when you filled it with acetic acid? if you recorded the final volume of NaOH as "39.88 mL" instead of "38.88 mL"?arrow_forward
arrow_back_ios
SEE MORE QUESTIONS
arrow_forward_ios
Recommended textbooks for you
Macroscale and Microscale Organic ExperimentsChemistryISBN:9781305577190Author:Kenneth L. Williamson, Katherine M. MastersPublisher:Brooks Cole
EBK A SMALL SCALE APPROACH TO ORGANIC LChemistryISBN:9781305446021Author:LampmanPublisher:CENGAGE LEARNING - CONSIGNMENT
Macroscale and Microscale Organic Experiments
Chemistry
ISBN:9781305577190
Author:Kenneth L. Williamson, Katherine M. Masters
Publisher:Brooks Cole
EBK A SMALL SCALE APPROACH TO ORGANIC L
Chemistry
ISBN:9781305446021
Author:Lampman
Publisher:CENGAGE LEARNING - CONSIGNMENT
Solutions: Crash Course Chemistry #27; Author: Crash Course;https://www.youtube.com/watch?v=9h2f1Bjr0p4;License: Standard YouTube License, CC-BY