Homework Answers
The compound does not respond to Tollen's test. So, the compound is a ketone not an aldehyde.
The compound does not respond to iodoform test ( KI/ I2 and NaOH/ H2O) So, we can conclude that the compound does not contain any alpha methyl group.
The compound is cycloheptanone.
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4. An unknown compound's semicarbazone melts at 162-165 °C. The compound does not give a...
POST-LAB QUESTIONS 1. A compound of molecular formula CH..0 forms a yellow precipitate with 2,4-dinitrophenylhydrazine reagent...
POST-LAB QUESTIONS 1. A compound of molecular formula CH..0 forms a yellow precipitate with 2,4-dinitrophenylhydrazine reagent and a yellow precipitate with reagents for the iodoform test, draw the structural formula for this compound. 2. What kind of results do you see when the following compounds are mixed together with the given test solution? a) with 2,4-dinitrophenylhydrazine with chromic with chromic acid with 12-KI reagent CH3CH2CH with Tollens' reagent 3. Write the structure of the compound that gives a silver mirror...
13. What results would be expected if the following tests were carried out on 4- hydroxy-3-methoxybenzaldehyde...
13. What results would be expected if the following tests were carried out on 4- hydroxy-3-methoxybenzaldehyde ? (Explain your answers.) (a) H2O solubility (b) Tollens' test. (c) Benedict's test 14. What practical applications might be made of the Tollen's reaction? 15. An unknown compound has a chemical formula of C3H60. When chromic acid (containing chromate ions) was added to the unknown, the solution remained orange. The unknown was soluble in water. When NaOH and KI/iodine were added to the unknown,...
13. What results would be expected if the following tests were carried out on 4- hydroxy-3-methoxybenzaldehyde...
13. What results would be expected if the following tests were carried out on 4- hydroxy-3-methoxybenzaldehyde ? (Explain your answers.) (a) H2O solubility (b) Tollens' test (c) Benedict's test 14. What practical applications might be made of the Tollen's reaction? 15. An unknown compound has a chemical formula of C3H.O. When chromic acid (containing chromate ions) was added to the unknown, the solution remained orange. The unknown was soluble in water. When NaOH and Kl/iodine were added to the unknown,...
Identification of the negative ion in the unknown solution From your test results, what negative ion (anion) is...
Identification of the negative ion in the unknown solution From your test results, what negative ion (anion) is present in your unknown? Explain your choice. Testing for Cations and Anions Report Sheet Questions and Problems Q.1 How do the tests on known solutions containing cations and anions make it possible for you to identify the cations or anions in an unknown substance? Q2 You hive a solution that is composed of either NaCl or CaCl, What tests would you run...
5. Compound C is insoluble in water and is soluble in 5M HCl solution. Identify the...
5. Compound C is insoluble in water and is soluble in 5M HCl solution. Identify the structure of C from the following options. i) Aniline ii) Benzoic acid iii) Phenol iv) Toluene 6. Compound D is insoluble in water/ 5M HCI / 5M NaOH / 5MNaHCO3 solutions. It forms a silver mirror when treated with Ammonical silver nitrate solution (Tollen's reagent). Identify the functional group in D. i) An alkyne ii) Phenol iii) An alkene iv) An aldehyde 7. Compound...
PreLab - ID of Liquid Unknown 1. A liquid which is soluble in water, 5% aq....
PreLab - ID of Liquid Unknown 1. A liquid which is soluble in water, 5% aq. NaOH and 5% aq. HCl is suspected of being an amine. What feature of the solubility tests would confirm whether or not it is an amine? Explain. 2. While the effect is generally small enough to he neglected, what variable of laboratory conditions can alter the measured boiling point temperature of the liquid? 3. Match the letter of the functional group to the description...
I think it is Heptane-4-one.. but I am uncertain. If you answer please make sure it...
I think it is Heptane-4-one.. but I am uncertain.
If you answer please make sure it is a complete answer
regarding both parts
I will give a good review! Thanks
Preliminary Identification You have been given an unknown compound. In the first part of this lab, you will examine the physical properties, solubility, and elemental analysis of the unknown. Fill out the information below as best as possible 1. Physical properties a. Solid or liquid: Liquid b. Color: Colorless 2....
an introduction to chemistry lab Pre-Lab Study Questions 1. How can the presence of an ion...
an introduction to chemistry lab
Pre-Lab Study Questions 1. How can the presence of an ion in a solution be detected? ไป dedeed by a lame the ions undec gp color changes By com paring knoum olion o a unKnown vo Can co ure he color ehanges in he lame If a reaction produces an insoluble salt, what will you notice happening in the test tube? 2. So,It wany saヅdissolved and tt a, precipitate oat, solut kan bep eadind on...
Qualitative Analysis of Organic Compounds: Pre lab questions (5 pts) 1. (1 point) Identify the functional...
Qualitative Analysis of Organic Compounds: Pre lab questions (5 pts) 1. (1 point) Identify the functional groups based on color / odor a. Dark yellow to red color indicates that the functional group could possibly be------------- b. Fruity / Floral odor indicates that the functional group could possibly be------------- c. Fishy odor indicates that the functional group could possibly be------------- d. Sharp, biting odor indicates that the functional group could possibly be------------- 2. (0.5 pts) If a liquid is soluble...
i need help with this lab please. can i get someone to answer the entire thing....
i need help with this lab please. can i get someone to answer
the entire thing. thank you
Instructor Equilibria of Coordination Compounds OBSERVATIONS AND DATA 1. The formation of complex ions with ammonia The net ionic equation for the reaction of excess Cuso, with NH, is 24 Cu2+ + 4NH3 [cu (NH3)4] The predicted effect on the reaction above of adding excess NH, (based on Le Châtelier's principle) is The reaction will shift to the night and product formation...
POST-LAB QUESTIONS 1. A compound of molecular formula CH..0 forms a yellow precipitate with 2,4-dinitrophenylhydrazine reagent and a yellow precipitate with reagents for the iodoform test, draw the structural formula for this compound. 2. What kind of results do you see when the following compounds are mixed together with the given test solution? a) with 2,4-dinitrophenylhydrazine with chromic with chromic acid with 12-KI reagent CH3CH2CH with Tollens' reagent 3. Write the structure of the compound that gives a silver mirror...
13. What results would be expected if the following tests were carried out on 4- hydroxy-3-methoxybenzaldehyde ? (Explain your answers.) (a) H2O solubility (b) Tollens' test. (c) Benedict's test 14. What practical applications might be made of the Tollen's reaction? 15. An unknown compound has a chemical formula of C3H60. When chromic acid (containing chromate ions) was added to the unknown, the solution remained orange. The unknown was soluble in water. When NaOH and KI/iodine were added to the unknown,...
13. What results would be expected if the following tests were carried out on 4- hydroxy-3-methoxybenzaldehyde ? (Explain your answers.) (a) H2O solubility (b) Tollens' test (c) Benedict's test 14. What practical applications might be made of the Tollen's reaction? 15. An unknown compound has a chemical formula of C3H.O. When chromic acid (containing chromate ions) was added to the unknown, the solution remained orange. The unknown was soluble in water. When NaOH and Kl/iodine were added to the unknown,...
Identification of the negative ion in the unknown solution From your test results, what negative ion (anion) is present in your unknown? Explain your choice. Testing for Cations and Anions Report Sheet Questions and Problems Q.1 How do the tests on known solutions containing cations and anions make it possible for you to identify the cations or anions in an unknown substance? Q2 You hive a solution that is composed of either NaCl or CaCl, What tests would you run...
5. Compound C is insoluble in water and is soluble in 5M HCl solution. Identify the structure of C from the following options. i) Aniline ii) Benzoic acid iii) Phenol iv) Toluene 6. Compound D is insoluble in water/ 5M HCI / 5M NaOH / 5MNaHCO3 solutions. It forms a silver mirror when treated with Ammonical silver nitrate solution (Tollen's reagent). Identify the functional group in D. i) An alkyne ii) Phenol iii) An alkene iv) An aldehyde 7. Compound...
PreLab - ID of Liquid Unknown 1. A liquid which is soluble in water, 5% aq. NaOH and 5% aq. HCl is suspected of being an amine. What feature of the solubility tests would confirm whether or not it is an amine? Explain. 2. While the effect is generally small enough to he neglected, what variable of laboratory conditions can alter the measured boiling point temperature of the liquid? 3. Match the letter of the functional group to the description...
I think it is Heptane-4-one.. but I am uncertain.
If you answer please make sure it is a complete answer
regarding both parts
I will give a good review! Thanks
Preliminary Identification You have been given an unknown compound. In the first part of this lab, you will examine the physical properties, solubility, and elemental analysis of the unknown. Fill out the information below as best as possible 1. Physical properties a. Solid or liquid: Liquid b. Color: Colorless 2....
an introduction to chemistry lab
Pre-Lab Study Questions 1. How can the presence of an ion in a solution be detected? ไป dedeed by a lame the ions undec gp color changes By com paring knoum olion o a unKnown vo Can co ure he color ehanges in he lame If a reaction produces an insoluble salt, what will you notice happening in the test tube? 2. So,It wany saヅdissolved and tt a, precipitate oat, solut kan bep eadind on...
i need help with this lab please. can i get someone to answer
the entire thing. thank you
Instructor Equilibria of Coordination Compounds OBSERVATIONS AND DATA 1. The formation of complex ions with ammonia The net ionic equation for the reaction of excess Cuso, with NH, is 24 Cu2+ + 4NH3 [cu (NH3)4] The predicted effect on the reaction above of adding excess NH, (based on Le Châtelier's principle) is The reaction will shift to the night and product formation...
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