A student has a mixture of two possible compounds. The student performs an extraction to separate the two compounds. The student decides to identify the separated compounds by melting point. The student's isolated compound has a melting range of 160-163 °C using a ramp rate of 10 °C/min. The student's partner believes that they have isolated compound 2, while the student thinke they have compound 1. Choose the best answer to go with this scenario. Compound 1 Literature Melting point: 113 °C Compound 2 Literature Melting point: 155 °C. O The students have neither of the two compounds. O The ramp rate is too high so the experimental melting range is not accurate. O The students likely have compound 2, but should do a mixed melting range experiment with a standard of compound 2 to be certain. O The students likely have compound 1, but should do a mixed melting range experiment with a standard of compound 1 to be certain. O It is correct that they definitely have compound 1. O It is correct that they definitely have compound 2. O They did not separate the compounds properly, and it is still a mixture.

A student has a mixture of two possible compounds. The student performs an extraction to separate the two compounds. The student decides to identify the separated compounds by melting point. The student's isolated compound has a melting range of 160-163 °C using a ramp rate of 10 °C/min. The student's partner believes that they have isolated compound 2, while the student thinke they have compound 1. Choose the best answer to go with this scenario. Compound 1 Literature Melting point: 113 °C Compound 2 Literature Melting point: 155 °C. O The students have neither of the two compounds. O The ramp rate is too high so the experimental melting range is not accurate. O The students likely have compound 2, but should do a mixed melting range experiment with a standard of compound 2 to be certain. O The students likely have compound 1, but should do a mixed melting range experiment with a standard of compound 1 to be certain. O It is correct that they definitely have compound 1. O It is correct that they definitely have compound 2. O They did not separate the compounds properly, and it is still a mixture.

Chemistry: The Molecular Science

5th Edition

ISBN:9781285199047

Author:John W. Moore, Conrad L. Stanitski

Publisher:John W. Moore, Conrad L. Stanitski

Chapter13: The Chemistry Of Solutes And Solutions

Section: Chapter Questions

Problem 107QRT

See similar textbooks

Similar questions

3. A student is trying to identify an unknown solid based on its melting point. She noted that the compound began to melt at 172°C and finished melting at 177°C. Knowing it is possible for there to be impurities in the sample, is this compound more likely to be camphor or hydroquinone. Explain your reasoning. 4. A young chemist has synthesized what he believed to be acetaminophen. He measured the melting point of this newly formed compound to be 163-178°C. If the literature value for the melting point of acetaminophen = 169-170.5°C, would the young chemist be wise to consume this product for headache relief? Why or why not?
1. An organic student did an experiment extracting benzoic acid from a mixture of other organic substances. Other analyses of the obtained sample confirmed the presence of benzoic acid. The student also measured the melting point of the white solid, 117.4-121.6 oC. The literature mp of benzoic acid is 122.3oC. What can you conclude about the sample? Select one. Group of answer choices The sample of benzoic acid contains soluble impurities. The student obtained a good yield of benzoic acid. The sample of benzoic acid contains insoluble impurities. The student obtained pure benzoic acid from the extraction. The student obtained a poor yield of benzoic acid. 2. Which phenomenon are sometimes confused with melting during mp analysis? Select all that apply. Group of answer choices decomposition cracking shaking sagging/shrinking sweating solidifying 3. Study the bond types in the compound shown. Select the type(s) of intramolecular force(s) you predict the substance to exhibit. Select all…
A student obtained a solid product in a laboratory synthesis. To verify the identity of the solid, she measured its melting point and found that the material melted over a 12°C range. After it had cooled, she measured the melting point of the same sample again and found that this time the solid had a sharp melting point at the temperature that is characteristic of the desired product. Why were the two melting points different? What was responsible for the change in the melting point?
3. Pure benzophenone melts at 48.1°C. Your sample of benzophenone began to freeze at 47.0°C. When you repeated this measurement, the sample again began to freeze at 47.0°C. Give at least two reasonable explanations for this observation.
what is the boiling point of a 2.6 m sucrose solution in ethanol?
Only typed solution.
4. When performing a melting point on a solid compound using a melting point apparatus, two melting point determinations were made. One sample, which was 1 mm in height in the capillary, possessed a melting point of 200.0-200.5°C. The other sample was 25 mm in height. What would you expect the approximate melting point to be for this sample, assuming identical heating rates of 1°/min? (Hint: heat is applied from the bottom of the sample) (Give an actual numerical approximation!) 5. For the same solid compound as the question above, if the 1 mm sample was heated at 60° per minute on a melting point apparatus, what would you expect for an approximate melting point? (note that at this heating rate, the sample will melt rather quickly, but again give an actual numerical approximation)
Predicting boiling point and freezing point
IXL Recognize sc x Terms of Use Classes https://www.oncourseconnect.com/assessment/1651875/41774aa4-b498-c1c9-30b9-e734c5 CHEMISTRY BENCHMARK TEST 01 CHEMISTRY I 12-3 (THOMAS WILLIAMS, ID: 12390719) Testing of a sample of matter shows that it has a single melting point of 1,453°C and a single boiling point of 2,732°C. This data suggests that the sample is a a nonmetal. b a metal, ©a hydrocarbon. O a mixture of ionic compounds. D. Seed 14320410 https://wweoncou econnect.com/assesmen/151675-41774ad-4-ce 11 Type here to search
Pure benzophenone melts at 48.1 C. Your sample of benzophenone began to freeze at 47 C. When you repeated this measurement, the sample again began to freeze at 47 C. Give at least two reasonable explanations for this observation. You tried to read the thermometer when your solution containing the unknown began to freeze but were not certain if the reading was 43.5 C or 44 C so you decided to repeat this by melting the solidifying mass. The new reading you observed was clearly 41 C. What happened? Clearly explain your reasoning.
What would be a Prerequisite Skill or Prior Knowledge that a 5th grade science class should know about Volcano Eruptions before using the below standard? Standard Conduct an investigation to determine whether the mixing of two or more substances results in new substances.
What is the classification of each substance