Homework Answers
7) The compound X is phenyl succinate because when both of them are mixed there is no significant change in the literature melting point. Hence it is not O-toluic acid.
8) Decolorization means that the sample is consumed and you can carry the process again by starting over.
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please answer them 7 and 8
7. A student was given an unknown compound X, which...
why isnt the benzoic acid answer?꙼̈ melting points of Benzoic acid and Phenyl succinate are both...
why isnt the benzoic acid answer?꙼̈
melting points of Benzoic acid and Phenyl succinate are both
121 celsius in the chart. can you please explain?꙼̈
1. An unknown compound X is one of the four compounds listed in the following table. A mixture of X with benzoic acid melts at 89°C, a mixture of X with phenylsuccinate melts at 20°C, and a mixture of X with m-aminophenol melts at 102°C. What is the identity of X? Explain Chemnical mp. ("C)...
please help An unknown compound X is one of the three compounds listed in the table...
please help
An unknown compound X is one of the three compounds listed in the table below. A mixture of X with trans-cinnamic acid melts from 126-130°C, a mixture of X with decanedioic acid melts from 131-132°C, and a mixture of X with 2-furancarboxylic acid melts from 121-133°C. Give the identity of X and explain your reasoning. Type your answer in the box given below. Compound m.p... °C decanedioic acid 131-133 trans-cinnamic acid 132-135 2-furancarboxylic acid 132-134 You are fractionally...
- A student is trying to identify an unknown solid based on its melting point. She...
- A student is trying to identify an unknown solid based on its melting point. She noted that the compound began to melt at 182°C and finished melting at 187°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. 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...
4. An unknown compound X is one of the five compounds listed in the table below....
4. An unknown compound X is one of the five compounds listed in the table below. A mixture of X with 2-methyl-3-pentanol melts at 118-125 °C, a mixture of X with 2-nitro-4- methoxyaniline melts at l 10-120°C, a mixture of X with 2-chloroethanol melts at 127-120°C, a mixture of X with 4-methyl-2-pentanol melts at 115-122 °C, and a mixture of X with 1- naphtylacetic acid melts at 108-121 °C. Give the identity of X and explain your reasoning. Compound 2-methyl-3-pentanol...
Question 14 The melting point of a pure compound is known to be 110-111º. Describe the...
Question 14 The melting point of a pure compound is known to be 110-111º. Describe the melting behavior expected if this compound is contaminated with 5% of an impurity. 90-96 111-113 90-91 110-111 5 pts Question 15 You and your lab partner take melting points of the same sample. You observe a melting point of 101-107°C, while your partner observes a value of 110-112°C. Explain how you can get two different values with exactly the same sample. One of the...
Please help with formulating a procedure to conduct this experiment Objective: Student will be given approximately...
Please help with formulating a procedure to conduct this experiment Objective: Student will be given approximately 1.00 g of an unknown solid mixture. The mixture will be primarily an unknown organic acid contaminated with a significant amount of an organic neutral compound. Student is required to separate and purify the organic acid. The melting point will be taken, and the samples will be returned to the instructor in a labelled vial. Students must have a complete procedure written out in...
Question 7 A chemistry student is given 2.00 L of a clear aqueous solution at 43.° C. He is told an unknown amount of a certain compound X is dissolved in the solution. The student allows the solution...
Question 7 A chemistry student is given 2.00 L of a clear aqueous solution at 43.° C. He is told an unknown amount of a certain compound X is dissolved in the solution. The student allows the solution to cool to 25.° C. At that point, the student sees that a precipitate has formed. He pours off the remaining liquid solution, throws away the precipitate, and evaporates the water from the remaining liquid solution under vacuum. More precipitate forms. The...
help with identifiying each unknown in extraction and washing experiment. the ir spectra are given below,...
help with identifiying each unknown in extraction and washing
experiment. the ir spectra are given below, along with data, and
the lab sheet is attached.
Neutral Solid Primary amine (Aniline) 3403cm - NE presence Transmittance 60 3258cm 1 streren NOUD Streich 50 Ctretcher strator NH2 aromatto 11 NO2 aring 2-nitroaniline K LILI 3600 3200 2800 2400 2000 1800 1600 Wavenumber cm-1 1400 1200 1000 800 600 Basic Solid primary amine Transmittance I NH2 Stretch p-acetvianiline 70 60 CS HG NO...
please identify the unknown and write a derivative Unknown compound 3 Clear liquid Physcial Properties Solubility...
please identify the unknown and write a derivative
Unknown compound 3 Clear liquid Physcial Properties Solubility Dissolve in ethyl ether Not dissolved in water Boiling point 77 IR spectrum Transmitance 3000 1000 2000 Wavenumber cm-1) Classification Positive test in Alkaline Iron (III) Hydroxamate test test CLASSIFICATION TESTS These tests must be done together with known AND FOLLOW PROCEDURE IN YOUR TEXT CARBOXYLIC ACIDS are detected by teating aqueous solutions with limus or pH paper. Also, disolve In NaHCO with bubbles...
Answer ALL parts a)-e). You are given an experimental procedure in which aniline reacts with acetic...
Answer ALL parts a)-e). You are given an experimental procedure in which aniline reacts with acetic anhydride to give acetanilide as shown below. The procedure uses 5.9 g of aniline and 6.3 g of acetic anhydride. aniline, M, 93 acetic anhydride, M, 102 acetanilide, M, 135 Calculate which of the reagents is limiting, and hence determine the maximum possible yield of acetanilide in grams. Show your working a) Based on your answer to part a), describe how you would remove...
why isnt the benzoic acid answer?꙼̈
melting points of Benzoic acid and Phenyl succinate are both
121 celsius in the chart. can you please explain?꙼̈
1. An unknown compound X is one of the four compounds listed in the following table. A mixture of X with benzoic acid melts at 89°C, a mixture of X with phenylsuccinate melts at 20°C, and a mixture of X with m-aminophenol melts at 102°C. What is the identity of X? Explain Chemnical mp. ("C)...
please help
An unknown compound X is one of the three compounds listed in the table below. A mixture of X with trans-cinnamic acid melts from 126-130°C, a mixture of X with decanedioic acid melts from 131-132°C, and a mixture of X with 2-furancarboxylic acid melts from 121-133°C. Give the identity of X and explain your reasoning. Type your answer in the box given below. Compound m.p... °C decanedioic acid 131-133 trans-cinnamic acid 132-135 2-furancarboxylic acid 132-134 You are fractionally...
- A student is trying to identify an unknown solid based on its melting point. She noted that the compound began to melt at 182°C and finished melting at 187°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. 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...
4. An unknown compound X is one of the five compounds listed in the table below. A mixture of X with 2-methyl-3-pentanol melts at 118-125 °C, a mixture of X with 2-nitro-4- methoxyaniline melts at l 10-120°C, a mixture of X with 2-chloroethanol melts at 127-120°C, a mixture of X with 4-methyl-2-pentanol melts at 115-122 °C, and a mixture of X with 1- naphtylacetic acid melts at 108-121 °C. Give the identity of X and explain your reasoning. Compound 2-methyl-3-pentanol...
Question 14 The melting point of a pure compound is known to be 110-111º. Describe the melting behavior expected if this compound is contaminated with 5% of an impurity. 90-96 111-113 90-91 110-111 5 pts Question 15 You and your lab partner take melting points of the same sample. You observe a melting point of 101-107°C, while your partner observes a value of 110-112°C. Explain how you can get two different values with exactly the same sample. One of the...
help with identifiying each unknown in extraction and washing
experiment. the ir spectra are given below, along with data, and
the lab sheet is attached.
Neutral Solid Primary amine (Aniline) 3403cm - NE presence Transmittance 60 3258cm 1 streren NOUD Streich 50 Ctretcher strator NH2 aromatto 11 NO2 aring 2-nitroaniline K LILI 3600 3200 2800 2400 2000 1800 1600 Wavenumber cm-1 1400 1200 1000 800 600 Basic Solid primary amine Transmittance I NH2 Stretch p-acetvianiline 70 60 CS HG NO...
please identify the unknown and write a derivative
Unknown compound 3 Clear liquid Physcial Properties Solubility Dissolve in ethyl ether Not dissolved in water Boiling point 77 IR spectrum Transmitance 3000 1000 2000 Wavenumber cm-1) Classification Positive test in Alkaline Iron (III) Hydroxamate test test CLASSIFICATION TESTS These tests must be done together with known AND FOLLOW PROCEDURE IN YOUR TEXT CARBOXYLIC ACIDS are detected by teating aqueous solutions with limus or pH paper. Also, disolve In NaHCO with bubbles...
Answer ALL parts a)-e). You are given an experimental procedure in which aniline reacts with acetic anhydride to give acetanilide as shown below. The procedure uses 5.9 g of aniline and 6.3 g of acetic anhydride. aniline, M, 93 acetic anhydride, M, 102 acetanilide, M, 135 Calculate which of the reagents is limiting, and hence determine the maximum possible yield of acetanilide in grams. Show your working a) Based on your answer to part a), describe how you would remove...
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