EBK EXPERIMENTAL ORGANIC CHEMISTRY: A M
6th Edition
ISBN: 9781305687875
Author: Gilbert
Publisher: CENGAGE LEARNING - CONSIGNMENT
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Question
Chapter 4.2, Problem 8E
Interpretation Introduction
Interpretation: Reason for no application of micro boiling-point technique in excess of
Concept introduction: Boiling point is defined as temperature that has a vapor pressure of liquid equal to the pressure that is present around liquid. At this temperature, the substance gets converted from the liquid state to vapor or gaseous phase.
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Filter paper is usually a poor material on which to powder a solid sample before
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In recrystallization, fluted filter paper is used instead of a regular cone because it minimizes its contact with the glass funnel. Why is this important?
Mention one disadvantage of a capillary column as compared to a packed column
Chapter 4 Solutions
EBK EXPERIMENTAL ORGANIC CHEMISTRY: A M
Ch. 4.2 - Prob. 1ECh. 4.2 - Prob. 2ECh. 4.2 - Prob. 3ECh. 4.2 - Prob. 4ECh. 4.2 - Prob. 5ECh. 4.2 - Prob. 6ECh. 4.2 - Prob. 7ECh. 4.2 - Prob. 8ECh. 4.2 - Prob. 9ECh. 4.3 - Prob. 1E
Ch. 4.3 - Prob. 2ECh. 4.3 - Prob. 3ECh. 4.3 - Prob. 4ECh. 4.3 - Prob. 5ECh. 4.3 - Prob. 6ECh. 4.3 - Prob. 7ECh. 4.3 - Prob. 8ECh. 4.4 - Prob. 1ECh. 4.4 - Prob. 2ECh. 4.4 - Prob. 3ECh. 4.4 - Prob. 4ECh. 4.4 - Prob. 5ECh. 4.4 - Prob. 6ECh. 4.4 - Prob. 7ECh. 4.4 - Prob. 8ECh. 4.4 - Prob. 9ECh. 4.4 - Prob. 11ECh. 4.4 - Prob. 12ECh. 4.4 - Prob. 13ECh. 4.4 - Prob. 14ECh. 4.6 - Prob. 1ECh. 4.6 - Prob. 2ECh. 4.6 - Prob. 3ECh. 4.6 - Prob. 4ECh. 4.6 - Prob. 5ECh. 4.6 - Prob. 6ECh. 4.6 - Prob. 7ECh. 4.6 - Prob. 8ECh. 4.6 - Prob. 9E
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- Why is GSC not used nearly as extensively as GLC?arrow_forwardSilica gel (stationary phase) can potentially interact with analytes by what intermolecular forces?arrow_forwardWhy is it necessary to immerse the flask both in hot and cold water for 5 minutes before taking the temperature? The water levels inside and outside the flask when it was submerged in cold bath must be equal before the flask is removed.arrow_forward
- Of Aspirin, ethanol, acetaminophen, ethyl acetate, hexane, and water which could go undetected during HPLC analysis, but could result in a lower than expected melting point, why are they not detected by HPLC analysis?arrow_forwardFor each of the following statements, answer TRUE or FALSE and explain your answer briefly. It is preferred to apply potassium dichromate solution over neutral density filter to check the photometric accuracy of UV-visible spectrophotometer.arrow_forwardWhy are stemless funnels preffered for hot filtirations?arrow_forward
- Explain what the liquid-liquid extraction technique consists of.arrow_forwardHow will you increase the measured yield of recrystallized benzoic acid? The receiving flask from hot filtration should not contain a little amount of solvent. Activated charcoal was not introduced to the solution. During cold filtration, a fluted filter paper was used. After hot filtration the solution was filtered immediately.arrow_forwardIn which of the following scenarios might you expect the observed melting point to be depressed? Choose all that apply. a. The heating rate for measuring the melting point was set too high. b. The percent recovery of recrystallized solid was less than 100%. c. A solid that was recrystallized from hexane was filtered and dried without washing with additional hexane while it was on the filter funnel. d. A solid recrystallized from toluene was left on the filter funnel for only a short time before its melting point was measured. e. The melting point capillary tube was packed with too much material.arrow_forward
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