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Acid and Base Organic Chemistry

Volume and pressure problems

6. One of the treatments for gangrene and "the bends," is hyperbaric oxygenation. This occurs in a chamber in which oxygen is used at higher-than-normal pressures. How many grams of oxygen are required to fill a 4.50 x 103 liter hyperbaric chamber at a pressure of 225 cm Hg and at 62° F? If the same quantity of oxygen was pumpe

Formation of para-toluene sulfonic acid

Write a complete mechanism for the formation of para-toluene sulfonic acid. Clearly show the formation of the actual electrophile and all resonance structures of the intermediate hybrid. Identify the most stable resonance structures. (See attachment for full description of the problem)

Organic chemistry problems

1.What is the change in pH when 0.005 moles of HCl is added to 0.100 L of a buffer solution that is 0.100 M in CH3CO2H and 0.100 M NaCH3CO2? The Ka for acetic acid is 1.8 x 10 -5. 2. What is the resulting pH when 0.005 moles of KOH is added to 0.100 L of a buffer solution that is 0.100 M in H2PO4- and 0.100 M HPO4 2- and the

Naming compounds, formulas and reactions

1. Give The name for each of the following compounds (numbers are small) A: NiSO4 B: Ca (NO2)2 C: SO2 D: Fe (C1O)3 2. Give the Formula for each of the following compounds A: Lithium Iodate B: Cupric Chloride C: Lead (IV) Oxide D: Zinc Sulfite 3. Balance the following reactions A: Na2CO3 + HC1 -------->

Structure of Leucine (6 Problems)

Choose a structure from the list provided below that best fits each of the following descriptions. Place the letter of the structure in the blank to the left of the description. There is only one correct answer for each question. (see attachment for full description of problems) a. Starch b. Cellulose (see attached) f. suc

Organic Chemistry: Synthesizing Compounds

Please answer the following questions. Draw the synthesizing of the compounds. 1. Starting with toluene, prepare 2-bromo-4-nitrotoluene. 2. Starting with toluene, prepare 2,4,6-trinitrobenzoic acid. 3. Starting from benzene, prepare p=chlorostyrene. 4. p-Bromotoluene reacts with potassium amide to give a mixture of m- and

Finding unknown compounds

11. A low-melting solid A was isolated, which combustion analysis showed had composition C9H10O. The substance gave a precipitate when treated with 2,4-dinitrophenylhydrazine solution. Furthermore, when reacted with iodoform reagent, a yellow precipitate of CHI3 was observed. Acidification of the alkaline solution from the iodo

Solving for pH of a Buffer

(a) What is the pH of a buffer prepared by combining 25mL of 0.1M nitrous acid with 25mL of 0.1M sodium nitrite? (b) Using an ice chart, calculate the pH of a buffer made by combining 5mL of 0.135M benzoic acid and 25mL of 0.15M sodium benzoate. (c) Using the Hendersen-Hasselbach equation, solve part B. How do your answers

Synthesis of cyclic carboxylic acid anhydrides

I am having trouble understanding why when maelic acid is heated to about 100 C it forms maelic anhydride but fumaric acid requires a much higher temp 250-300 before it dehydrates. Then in addition it only forms maleic anhydride?

Amines Acidification with Ammonia

If you add 15 drops of 6M HCl (a source of H+) to a mixture of 10 drops of 6 M ammonia solution and 1 dropperful of demineralized water, what would the following be: 1) pH 2) solubility 3) observed chemical reactions that would occur If you were to re-basify the solution by adding 20 drops of 6 M NaOH (which is a source of

Separating a 1:1 mixture of solid sugar and solid sodium benzoate

Assuming that sugar is soluble in water and not most organic solvents, list the steps in order that you would take for separating a 1:1 mixture of solid sugar and solid sodium benzoate. Your available reagents (not all of which have to be used) are: concentrated HCl, 1M NaOH, Et2O, H2O, and Na2SO4.

Organic Chemistry

(See attached file for full problem description) 7. which of the following alochols would not undergo a color change from orange to green with chromic acid? 8. predict the products of the reaction 9. Calculate the extinction coefficient of compound X given the following information: patchlength: 1cm, concetration 2.0*

Organic Chemistry

(See attached file for full problem description) 3. Sulfuric acid would dehydrate which of these alcohols fastest (identical reaction conditions for all)? 4. Which cation is not aromatic? 5. Which methods below will furnish 1-hexanol? 6. Reduction of a triple bound to a double bond having a cis geometry can be accomp

Solubility in hexane

Is methanol soluble in hexane? Why or why not? Is 1-propanol soluble in hexane? Why or why not? What is the sketched formula for ethyl methyl ester and is it an isomer of butanoic acid? If not, what is the isomer of butanoic acid?

Stretching Vibration Calculations

I need some help with these acid and base chemistry questions. 1. The Anti-symmetric -CH2-CO-O Stretching Vibration in carboxylic acid is heavily mixed with in plane bending mode of the OH group. In alcohol these two vibrations seldom show evidence of mechanical coupling. Explain. 2. Conjugation of the functional group i

Hydration and Hydrogenation Reactions

Give and name the products when 3-t-butyl 2,4-dimethyl 1-hexene reacts with the following (assume the proper catalysts are present): 1) Water 2) Hydrogen gas

Bromine addition to trans-cinnamic acid

During bromine addition to trans-cinnamic acid, why is it necessary to maintain excess bromine in the reaction mixture and how can you tell there is an excess of bromine?

Organic chemistry reaction in the presence of Ag2O

When (S)-2-bromopropanoic acid [(S)-CH3CHBrCO2H] reacts with concentrated sodium hydroxide, the product formed (after acidification) is (R)-2-hydroxypropanoic acid, commonly known as (R)-lactic acid. This is the normal stereochemical result for an SN2 reaction. However, when the same reaction is carried out with a low concentr

Oxidation Reduction

I need help with oxidation and reduction for organic compounds and calculation of oxidation levels. Please see attachment. --- 1. Label each transformation below as oxidation, reduction or neither oxidation nor reduction. Show evidence (calculation of oxidation levels) to support you answer. 2. Rank the following compoun

Detection of Strong Acids

Which would you expect to be the stronger acid? a) B-chloroethyl or ethyl alcohol? b) isopropyl alcohol or hexafluroisopropyl alcohol? c) n-propyl alcohol or glycerol, HOCH2CHOHCH2OH?(2 should be subscripts) d) Which alcohol of each pair would you expect to be the stronger nucleophile?

How many stereoisomers of (S)-adenosylmethionine are theoretically possible?

How many stereoisomers of (S)-adenosylmethionine are theoretically possible? Enter your response as the integernumber. The higher PKa value corresponds to the { STRONGER / weaker } acid. State which one is right. Calculate the degree of unsaturation number of missing H2 units relative to an alkane for the Compound with

Chemistry General Questions

1. Write the electron configuration for Calcium. Draw a line angle structural formula for 3-methyl pentane 2. Draw the major and minor resonance structure for the carbonate ion (CO3^-2). Include any formal charges, Indicate which are the major resonance structures and why. 3. Consider the species CH3SO3H, CH3CH2OH and C

Aminobenzene

When aminobenzene is subjected to standard nitration conditions {HONO2/(HO)2SO2} poor yields 1-amino-3 itrobenzene are obtained. Briefly explain this result using resonance molecular structure formulas to support your arguments.

3 Lab Questions

1. Think and describe what you would do in each of the following situations which could happen in your laboratory. a. You are working at your station and the 100-mL round-bottom flask in which you are running a reaction in ether solvent suddenly catches fire. b. The person working across the laboratory bench from you allows