When a small amount of CH3(CH2)4CO2H, (pKa ~4.8) is added to a separatory funnel that contains ether and water with a pH = 2.0, it is found mainly in the ________ layer as ________.
A) ether; CH3(CH2)4CO2-
B) water; CH3(CH2)4CO2-
C) ether; CH3(CH2)4CO2H
D) water; CH3(CH2)4CO2H
E) none of the above
When a small amount of CH3(CH2)4CO2H, (pKa ~4.8) is added to a separatory funnel that contains...
5) When a small amount of CH3(CH2)4CO2H (pKa --4.8) is added to a separatory funnel that contains ether and water with a pH = 12.0, it is found mainly in the layer as A) ether; CH3(CH2)4CO2H B) water; CH3(CH2)4CO2- C) water; CH3(CH2)4CO2H D) ether; CH3(CH24CO2- E) none of the above
You have a separatory funnel that contains a solution of 4-methyl benzoic acid and ethoxybenzene in methylene chloride. By adding KOH (aq) into this solution for extraction, what compound(s) would be expected to form in the aqueous layer? Write the equation. Compound X has a hexane/water distribution coefficient of 2.0. (a) Does compound X have a higher or lower solubility in hexane comparing to water? (b) How much of a 3.0 g sample of compound X dissolved in 100 ml...
5. Suppose you dissolve 0.1 moles of 1-aminobutane (NH2-CH2-CH2-CH2-CH3) in 1.0 liter of water. a. What are all of the molecules and ions you would expect to find in the solution? b. Which two of the above will be found in the greatest total amount? Hint: what is the approximate pKa of an amino group?) c. Which one of the above will be found in the least total amount?
6) When 0.0100 moles of dimethyl amine ((CH3)2NH) is added to 1.000 liters of water, the pH of the water increases above the value pH = 7.0 found for neutral solutions. Based on this, we may conclude that a) dimethyl amide is a Lewis base b) dimethyl amide is a Bronsted base c) dimethyl amide is an Arrhenius base d) both b and c e) Both a and b and
6) When 0.0100 moles of dimethyl amine ((CH3)2NH) is added to 1.000 liters of water, the pH of the water increases above the value pH = 7.0 found for neutral solutions. Based on this, we may conclude that a) dimethyl amide is an Arrhenius base b) dimethyl amide is a Bronsted base c) dimethyl amide is a Lewis base d) both a and b e) Both a and b and c
6) When 0.0100 moles of dimethyl amine ((CH3)2NH) is added to 1.000 liters of water, the pH of the water increases above the value pH = 7.0 found for neutral solutions. Based on this, we may conclude that a) dimethyl amide is an Arrhenius base b) dimethyl amide is a Bronsted base c) dimethyl amide is a Lewis base d) both a and b e) Both a and b and c 3
urgent 6) When 0.0100 moles of dimethyl amine (CH3)2NH) is added to 1.000 liters of water, the pH of the water increases above the value pH = 7.0 found for neutral solutions. Based on this, we may conclude that a) dimethyl amide is an Arrhenius base b) dimethyl amide is a Bronsted base c) dimethyl amide is a Lewis base d) both a and b e) Both a and band c
6) When 0.0100 moles of dimethyl amine (CH3)2NH) is added to 1.000 liters of water, the pH of the wall increases above the value pH - 7.0 found for neutral solutions. Based on this, we may conclude that a) dimethyl amide is a Lewis base b) dimethylamide is a Bronsted base c) dimethylamide is an Arrhenius base d) both b and e) Both a and b and
1)When you perform a liquid-liquid extraction using a separatory funnel, which of the following organic solvent is on the bottom of the aqueous phase and which is on top? (write your answer by the solvent name) a) Ethyl acetate b) hexane c) Dichloromethane d) diethyl ether 2) If you are performing a liquid-liquid extraction and you have a mix of a carboxylic acid and a non-acidic compound, which combination of solvents would you use for the separation? a) dichloromethane/HCI b)...
Question 13 Match each of the following organic compounds with its name A. CH3 -CH2--0--CH3 A. ethyl methyl ether B. propanal 0 11 CH3 CH2 C-H CI 0 C. 3-chloro-2 butanone D. ethanol CH3 CH--C--CH3 CH3-CH2-OH Question 18 CH3-CH2-O- CH2 - CH3 Which of the following active groups is present in the organic structure above A. aldehyde B. alcohol C. acid D. ketone E. ether