Experiment 18 Report

Do not give handwriting solution.

Salicylic acid, HOC6H4CO2H, and its derivatives have been used as pain relievers for a long time. Salicylic acid occurs in small amounts in the leaves, bark, and roots of some vegetation (most notably historically in the barkof the willow tree). Extracts of these plants have been used as medications for centuries. The acid was first isolated in the laboratory in 1838.(a) Both functional groups of salicylic acid ionize in water, with Ka = 1.0 × 10−3 for the—CO2H group and 4.2 × 10−13 for the −OH group. What is the pH of a saturated solution of the acid (solubility = 1.8 g/L).(b) Aspirin was discovered as a result of efforts to produce a derivative of salicylic acid that would not be irritating to the stomach lining. Aspirin is acetylsalicylic acid, CH3CO2C6H4CO2H. The −CO2H functional group is stillpresent, but its acidity is reduced, Ka = 3.0 × 10−4. What is the pH of a solution of aspirin with the same concentration as a saturated solution of salicylic acid (See Part a).(c) Under some…

The amount of tartaric acid is responsible for the tartness of wine and controls the acidity of the wine.  Tartaric acid also plays a very significant role in the overall taste, feel and color of a wine.   Tartaric acid is a diprotic organic acid The chemical formula for tartaric acid is C4H6O6 and its structural formula is HO2CCH(OH)CH(OH)CO2H.   A 50.00 mL sample of a white dinner wine required 21.48 mL of 0.03776 M NaOH to achieve a faint pink color.  Express the acidity of the wine in terms of grams of tartaric acid, H2C4H4O6 (M. M.  =  150.10) per 100 mL of wine.  Assume that the two acidic hydrogens are titrated at the end point. MM H2C4H4O6 = 150.10 MM NaOH = 40.00 Below is the balanced chemical equation for this titration.

1. Benzoic acid is a stronger acid than benzyl alcohol by more than ten orders of magnitude, despite both containing a hydroxyl group. Why? Draw structures to support your answer.

Salicylic acid, HOC6H4CO2H, and its derivatives have been used as pain relievers for a long time. Salicylic acid occurs in small amounts in the leaves, bark, and roots of some vegetation (most notably historically in the bark of the willow tree). Extracts of these plants have been used as medications for centuries. The acid was first isolated in the laboratory in 1838. (a) Both functional groups of salicylic acid ionize in water, with Ka = 1.0 ×× 10−3 for the—CO2H group and 4.2 ×× 10−13 for the −OH group. What is the pH of a saturated solution of the acid (solubility = 1.8 g/L). (b) Aspirin was discovered as a result of efforts to produce a derivative of salicylic acid that would not be irritating to the stomach lining. Aspirin is acetylsalicylic acid, CH3CO2C6H4CO2H. The −CO2H functional group is still present, but its acidity is reduced, Ka = 3.0 ×× 10−4. What is the pH of a solution of aspirin with the same concentration as a saturated solution of salicylic acid (See Part a).

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In the following acid - base reactions, a) Draw Lewis structures of the reactants and the products. b) Determine which species are acting as electrophiles (acids) and which are acting as nucleophiles (bases). c) Use the curved - arrow formalism to show the movement of electron pairs in these reactions and the imaginary movement in the resonance hybrids of the products. d) Indicate which reactions are best termed Brønsted-Lowry acid - base reactions i. CH3CHO + HCI-- > CH3CH2O + + Cl- ii. CH3CHO + OH- - - > CH3CO-(OH) H

Draw the Lewis structures for chloroacetic acid and for acetic acid.  Use structural arguments to explain why acetic acid is a weaker acid then chloroacetic acid.  Be sure to refer to the stability of the ion that would be formed after dissociation of the acid.

Alkaloids are basic nitrogen-containing compounds of plant origin, many of which are physiologically active when administered to humans. Ingestion of coniine, isolated from water hemlock, can cause weakness, labored respiration, paralysis, and eventually death. Coniine is the toxic substance in the “poison hemlock” used in the death of Socrates. In small doses, nicotine is an addictive stimulant. In larger doses, it causes depression, nausea, and vomiting. In still larger doses, it is a deadly poison. Solutions of nicotine in water are used as insecticides. Cocaine is a central nervous system stimulant obtained from the leaves of the coca plant.Classify each amino group in these alkaloids according to type (primary, secondary, tertiary, aliphatic, aromatic, heterocyclic).

Can you please answer this question by details

Dr. Frank's Magical Cure-all Cough Syrup contains three ingredients, shown below. You seek to isolate these three ingredients to further quantify and analyze them, something that can be achieved via liquid-liquid extraction. Propose a flow chart demonstrating how you would separate each of the components into a distinct organic layer. This flowchart should represent all of the chemicals required for the separation, and depict accurate representations of the chemical species throughout the process. H H. НО

Identify the functional groups in the following molecules. (Use names from the table below. List each class of functional group only once. If there are fewer than 3 functional groups, leave an appropriate number of answer boxes empty.) HO CHS a) b) OH amine Carboxylic Acid Give detailed Solution with explanation needed, don't give Handwritten answer arene NH₂ phenylalanine

I'm asked to "assume that ozempic is in a solution at pH = 7. Draw the functional groups at their correct protonation form". For this, would I make all of the carboxyl groupsgo from COOH to COO-? and then the amide groups go from CONH to CONH3 + ? What about ether groups (COC) ?

choose either Soluble or Non-soluble with explanation

Need help determining the acidic and neutral components in an unknown sample. Have one of the following functional groups: Aldehyde Amine Ketone Alcohol Carboxylic acid Ester Phenol May have: Chlorine Ether Bromine Alkene lodine Alkyne Nitro Aromatic

Part B Write the balanced chemical equation for the dissociation of a-hydroxypropanoic acid in water. Express your answer as a chemical equation, using condensed formulas to represent the compounds in the equation. ΑΣΦ ? C₂ H₂ (OH)COOH + H₂O=C₂ H₂ (OH)COO¯ + H₂O+ A chemical reaction does not occur for this question. Submit Previous Answers Request Answer X Incorrect; Try Again; 5 attempts remaining

a) HCl solubility test One common organic functional group, the amine group, is found in compounds that are insoluble in water but soluble in aqueous HCl solution. Draw the structure of a compound with this functional group. Write the equation for the reaction of this compound with aqueous HCl solution. Explain why amines would be soluble in aqueous HCl even though they are insoluble in water. The compound should have 15 number of carbons.   b) Bromine test for alkenes Draw the structure for an alkene, then write the mechanism (using electron pushing arrows) and predict the product for the reaction between this alkene and Br2. Bromine is orange color, and bromoalkanes are colorless. Explain what the reactants and products would look like before and after this reaction occurs. The compound should have 15 number of carbons.

Decide whether each of the molecules in the table below is stable, in the exact form in which it is drawn, at pH=12. If you decide at least one molecule is not stable, then redraw one of the unstable molecules in its stable form below the table. (If more than one molecule is unstable, you can pick any of them to redraw.) HO OH Ostable Ounstable Ostable Ounstable OH in Click and drag to start drawing a structure. Ostable Ounstable Ostable Ounstable č X

The normal pH range for blood plasma is 7.35–7.45. Under these conditions, would you expect the carboxyl group of lactic acid (pKa 3.08) to exist primarily as a carboxyl group or as a carboxylic anion? Explain.