EBK EXPERIMENTAL ORGANIC CHEMISTRY: A M
6th Edition
ISBN: 9781305687875
Author: Gilbert
Publisher: CENGAGE LEARNING - CONSIGNMENT
expand_more
expand_more
format_list_bulleted
Question
Chapter 3.3, Problem 12E
Interpretation Introduction
Interpretation:Whether aThiele micro melting-point technique can be used to determine the exact melting point of an unknowncompound or not needs to be determined.
Concept Introduction:The Thiele tube is used to determine the melting point of an unknown compound in quantitative analysis.
It is a laboratory glassware that is heated on an oil bath. The Thiele tube is heated with a small flame. As the boiling point of substance reaches, the heating is stopped and the temperature starts to fall which gives the idea about the boiling point of substance.
For the melting point, the temperature must be checked at which the substance starts melting.
Expert Solution & Answer
Want to see the full answer?
Check out a sample textbook solution
Students have asked these similar questions
4. A student received an impure sample of benzoic acid and reported the melting
"mp=121.5 °C." The student reported the sample as pure since the melting
too far off. What mistake was made that could have proven the sample's
point as
wasn't
point
impurity?
Filter paper is usually a poor material on which to powder a solid sample before
introducing it into a capillary melting-point tube because small particles of
paper may end up in the tube along with the sample. Why is this undesirable?
and how might the presence of paper in the sample make the melting-point
determination difficult
Q. Determination of hardness by Clark's method.
Chapter 3 Solutions
EBK EXPERIMENTAL ORGANIC CHEMISTRY: A M
Ch. 3.2 - Prob. 1ECh. 3.2 - Prob. 2ECh. 3.2 - Prob. 3ECh. 3.2 - Prob. 4ECh. 3.2 - Prob. 5ECh. 3.2 - Prob. 6ECh. 3.2 - Prob. 7ECh. 3.2 - Prob. 8ECh. 3.2 - Prob. 9ECh. 3.2 - Prob. 10E
Ch. 3.2 - Prob. 11ECh. 3.2 - Prob. 12ECh. 3.2 - Prob. 13ECh. 3.2 - Prob. 14ECh. 3.2 - Prob. 15ECh. 3.2 - Prob. 16ECh. 3.2 - Prob. 17ECh. 3.2 - Prob. 18ECh. 3.2 - Prob. 19ECh. 3.2 - Prob. 20ECh. 3.2 - Prob. 21ECh. 3.2 - Prob. 22ECh. 3.2 - Prob. 23ECh. 3.2 - Prob. 24ECh. 3.2 - Prob. 25ECh. 3.2 - Prob. 26ECh. 3.2 - Prob. 27ECh. 3.2 - Prob. 28ECh. 3.2 - Prob. 29ECh. 3.2 - Prob. 30ECh. 3.2 - Prob. 31ECh. 3.2 - Prob. 32ECh. 3.2 - Prob. 34ECh. 3.3 - Prob. 1ECh. 3.3 - Prob. 2ECh. 3.3 - Prob. 3ECh. 3.3 - Prob. 4ECh. 3.3 - Prob. 5ECh. 3.3 - Prob. 6ECh. 3.3 - Prob. 7ECh. 3.3 - Prob. 8ECh. 3.3 - Prob. 10ECh. 3.3 - Prob. 11ECh. 3.3 - Prob. 12ECh. 3.3 - Prob. 13ECh. 3.3 - Prob. 14ECh. 3.3 - Prob. 15ECh. 3.3 - Prob. 16ECh. 3.3 - Prob. 17ECh. 3.3 - Prob. 18ECh. 3.3 - Prob. 19ECh. 3.3 - Prob. 21ECh. 3.3 - Prob. 22ECh. 3.3 - Prob. 23ECh. 3.3 - Prob. 24ECh. 3.3 - Prob. 25ECh. 3.3 - Prob. 26E
Knowledge Booster
Similar questions
- What are the different melting point apparatus that are available for routine analysis? Describe each.arrow_forwardMelting Point How will you collect data for this experiment? virtually Melting Point Measurement and Correction Approximate melting point of unknown compound: 85 – 96 °C Select an appropriate melting point standard with a melting point closest to the approximate melting point of your unknown compound. Choose the standard: A. 98 – 100 °C Saved A B. 160 – 162 °C C. 252 - 254 °C Measured absolute melting point of the standard: 96 - 98 °C Measured absolute melting point of the unknown compound: 90 - 94 °C Compare the reported and experimental melting points of the standard to determine if any corrections need be done for your unknown melting point. Correction (°C): 92 - 96 Savedarrow_forwardIn order to obtain accurate data it is important to add hear slowly and steadily when the temperature gets close to the melting point of a sample. Why is necessary?arrow_forward
- Calculate the temporary hardness, permanent and total hardness of the sample of water from the following results. Also indicate if the sample is Permanent or Temporary. H=1, C=12, 0=16, N=14, Mg = 24, K = 39, Cl=35.3, Ca= 40,S=32, Na =23 If the sample is Permeant use P Temporary T Neither permeant nor temporary use X Blank 1 Blank 3 Blank 5 Blank 7 Sample M₂CO3 Nacl CaCO3 Ca(NO3)2 CaCl₂ KSO4 Mg(NO3)2 MgCl, MgSO4 Blank 9 Blank 11 Blank 13 Blank 15 Blank 17 Blank 19 Total permanent hardness? Total Temporary hardness? Total Hardness? Mg/1 30.2 12.5 42 55.5 22.8 12 60 32 45 Mg(HCO3)2 38 Molecular weight Hardness 85 58.3 100 164 110.6 135 148 94.6 120 146 Blank 2 Blank 4 Blank 6 Blank 8 Blank 10 Blank 12 Blank 14 Blank 16 Blank 18 Blank 20 Blank 21 Blank 22arrow_forwardDid sublimation aid in the purification of the unknown in Part 3? Justify your answer.arrow_forwardPlease don't provide handwritten solution ...arrow_forward
- During the microscale boiling-point determination of an unknown liquid, heating was discontinued at 154°C and the liquid immediately began to enter the inverted bell. Heating was begun again at once, and the liquid was forced out of the bell. Heating was again discontinued at 165°C, at which time a rapid stream of bubbles emerged from the bell. On cooling, the rate of bubbling gradually diminished until the liquid reached a temperature of 161°C and entered and filled the bell. Explain this sequence of events. What was the boiling point of the liquid?arrow_forwardkindly help me with this problem thank you Subject: PHYSICAL CHEMISTRY INSTRUCTIONS: solve as neatly as possible and show complete solution. Round your final answer to four decimal places and box highlight all final answers. all values must include proper units with proper conversion if needed in your solution. kindly follow this format Given Required Solution thank you so much!arrow_forwardWhat is each cycle of a simple distillation called? Theoretical plate Distillate Condensate Fraction Eluentarrow_forward
- Describe the errors which may cause an observed melting point range of a PURE sample to be: higher than the correct melting point broad in rangearrow_forwardTopic: Phasearrow_forward3. What is particulate gravimetry? When do we use this technique? 4. What are the conditions for a successful gravimetric analysis. 5. Define nucleation. What conditions are important for this stage.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
Principles of Instrumental AnalysisChemistryISBN:9781305577213Author:Douglas A. Skoog, F. James Holler, Stanley R. CrouchPublisher:Cengage Learning
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
Principles of Instrumental Analysis
Chemistry
ISBN:9781305577213
Author:Douglas A. Skoog, F. James Holler, Stanley R. Crouch
Publisher:Cengage Learning
EBK A SMALL SCALE APPROACH TO ORGANIC L
Chemistry
ISBN:9781305446021
Author:Lampman
Publisher:CENGAGE LEARNING - CONSIGNMENT