C2H5CO2H(l) + C3H7OH(l) ---> C2H5COOC3H7(l) + H2O(l) 18.5 mL propanoic acid are mixed with 19.0 mL n-propanol to produce n-propyl propanoate when heated and distilled. At room temperature, the equilibrium constant, Keq is approximately 3. Calculate the number of moles of reactants and products expected in the equilibrium
C2H5CO2H(l) + C3H7OH (l) ---> C2H5COOC3H7(l) + H2O When 18.5 mL of propanoic acid and 19.0 mL of n-propanol are mixed together, calculate the volume of water expected if the yield of the ester were 100% Other Data: Boiling point of 1-propyl propanoate - 122 degrees C Volume of water collected - 3.31 mL Weight of produ
Question 1) Outline the steps of each of the following compounds from benzene, toluene and alcohol of four carbons or fewer. 1) 2,3-dimethyl-2-butanol 2) 2-phenyl-2-propanol 3) 3-hexanol 4) 4-ethyl-4-heptanol 5) 2-Bromo-2-methylhexene 6) 1,2-diphenyl-2-propanol 7) 1-p-bromophenyl-1-phenyl-1-propanol
The reaction of a carboxylic acid with an alcohol in the presence of acid is termed Fischer esterification. 1) the nucleophile in this reaction is: _________ 2) compound C functions as ____________ in the reaction a) neutralizer b) catalyst c) solvent d) base scavenger 3) Fischer esterification is an exampl
Please see the attached file. 1) What is the order of increasing acidity for the following compound (least to most)? 2) What is the order of decreasing reactivity towards nucleophilic acyl substitution for the carboxylic acid derivatives (most reactive first)? 3) the reaction is described as a ___________ process
1. When you mix 10.0ml of ascorbic acid standard solution in the flask with 25ml water, 2ml of 6M acetic acid solution and 1ml of starch solution, it is necessary to know the exact final volume of this solution to get an accurate determination of ascorbic acid in the titrations of test solutions? Explain. Hint: Do the volumes o
I have a chemistry problem. In lab we did the experiment Recrystallization. I would like to know if my values that I got in the laboratory are sensible and my percentage recovery. The mass of my impure aspirin was 0.250mg. My volume of solvent used for my impure aspirin was 3.25ml. I got this value from my 2.50ml of water used a
The difference between methane and methanol is an -OH group replacement of a H group. What difference does the -OH group make in this case? Whats the potential for exposure, the most likely exposure routes, and the toxicity effects with it?
Given the following: methanoic acid (CH2O2) + heat + reduction = CH2O (formaldeyhde vapor) ethanoic acid (C2H4O2) + heat + reduction = CH3O2 (acetaldehyde vapor) 1) Is it reasonable to assume that these aqueous organic acids when heated to vapor will in fact lose an oxygen and convert to formaldehyde and acetaldehyde vapo
Multiple choice questions relating to IR, UV and NMR spectroscopy. Please click on files for details.
2. Describe simple chemical tests that would enable you to distinguish between the following sets of compounds. Write equations for any chemical reactions: (a) dinitrogen monoxide (nitrous oxide), ammonia, and nitrogen (b) carbon monoxide, carbon dioxide, and nitrogen monoxide (c) dilute hydrochloric acid, deuterium oxide, a
Write the resonance structures that explain why the radical formed when vitamin C (ascorbic acid) loses a proton and an electron is so stable?
If you can remember back to a discussion and inquiry we exchanged last week concerning the use of sodium carbonate vs. calcium carbonate. If you'll recall we were theorizing as to why differing amounts of carbonate in a titration experiment were needed to raise the pH of a solution from 4.0 to 5.0. When we assumed 100% solubi
An actual lab titration of a mildly acidic process water at a pH of 4.0 requires 0.9 grams/liter of Na2CO3 to raise the pH from 4.0 to 5.0; re-running the titration but this time using CaCO3 requires 2.2 grams/liter of CaCO3 to raise the process water pH from 4.0 to 5.0...essentially a 2.25X difference. If we assume these tit
I have a wood chemistry course in which we are asked to explain the hierarchy of the organic wood acids present in softwood species like pine or spruce. Could you please offer a few other possible organic acids that might be present in softwoods? I am only really interested in the predominant acids.
1) When organic acids are subjected to continuing increases in temperature, and depending on the acid itself, is it reasonable to assume that organic acids convert first to aldehydes, then to alcohols, then to alkanes given increasing temperature? It is also a fair assumption that condensing of these compounds would occur in the
I was able to balance a formic acid to calcium methanoate equation as follows: 3CH2O2 + 2CaCO3 = 2(CHO2)Ca + 3CO2 + 2H2O However, I have tried and tried and cannot seem to balance an acetic acid to calcium ethanoate equation: xC2H4O2 + yCaCO3 = y(C2H3O2)Ca + xCO2 + zH2O I just cannot seem to balance this equation ---
There exists both formic acid and acetic acid in a 1 liter solution of water. The overall solution pH is stated as 4.0 and it is also assumed that the 2 acids contribute equally to the pH. How do I then determine the molar concentration and quantity of each acid in the 1 liter solution of water?
6. The Ka of citric acid is 7.4 x 10-4. What is the pH of a buffer made form 0.1 M citric acid and 0.1 M monosodium citrate?
Pretend that you are running the following experiment as outlined attached. 1. Prepare 100 mL of 5.0% (w/v) D-glucose solution. Fill the polarimeter cell with the solution. The cell is 10 cm in length. The polarimeter is set at 586 nm. 2. Zero the polarimeter on air. 3. Measure the optical rotation every five minutes and rec
1. Why is p-nitroaniline soluble in acid solution? Write the reaction. 2. Why is 2--naphthol soluble in base solution. Write the reaction.
1. Write the equations showing reactions of the amine and the carboxylic acid with the acids and bases added. 2. What are the major disadvantages of using ether as a solvent?
Mechanism for rxn of acetanilide and tert-butyl alcohol (with sulfuric acid) including product.
1. Devise syntheses for the molecules shown. 2. The spicy flavor of cayenne pepper is due mainly to a substance called capsaicin. See if you can deduce the structure of each intermediate on the basis of the capsaicin laboratory synthesis. See attached file for full problem description.
This problem asks to use equations to outline feasible synthetic routes to the compounds below starting with benzene or toluene and any other necessary aliphatic or inorganic reagents. Assume o- and p- isomers can be separated. a. p-aminobenzoic acid b. m-chloroethylbenzene c. 2-bromo-5-(1-propenyl)aniline See attac
One of the first methods that was used for determining the relative orientations of substituents on aromatic rings was devised by Korner. The "Korner Method of Absolute Orientation" was first applied to determine the structures of the three isomeric dibromobenzenes A, B, and C. Each isomer can be converted into one or more mon
Please name the PRODUCTS after each step of the synthesis. See attached file for full problem description.
What is the concentration of A^3- ions at equilibrium for a 0.10 M solution of a hypothetical triprotic acid H3A, with Ka1 = 6.0 x 10^-3, Ka2 = 2.0 x 10^-8, Ka3 = 1.0 x 10^-14 ? a) 9.1 x 10 ^ -21 M b) 6.2 x 10 ^ -18 M c) 3.1 x 10 ^ -15 M d) 1.0 x 10 ^ -14 M e) 4.8 x 10 ^ -19 M
If you treat toluene with 2 equivalences of bromine, you will get aminly 2,4-dibromotoluene and not 2, 6-dibromotoluene. However, you can produce 3, 5-dibromotoluene by treating 4-aminotoluene with 2 equivalences of bromine. Then first treating the product, 4-amino-3,5-dibromotoluene, with HNO2 in H2SO4, and secondly treating th
This problem set (2 questions, see attached file) provides an opportunity to evaluate organic acids and bases in order to determine the side of a reaction favored at equilibrium.