Lab 16 Synopsis Commisso

In the presence of excess base and excess halogen, a methyl ketone is converted to a carboxylate ion. The reaction is known as the haloform reaction because one of the products is haloform (chloroform, bromoform, or iodoform). Before spectroscopy became a routine analytical tool, the haloform reaction served as a test for methyl ketones: the formation of iodoform, a bright yellow compound, signaled that a methyl ketone was present. Why do only methyl ketones form a haloform?

1. What is diazotization? Why are aromatic diazonium salts more stable thanaliphatic diazonium salts?   2.  What is the purpose of adding 10% NaOH in the azo dye reaction?

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19 19 400 410 420 ng to another question will save this response. on 8 Give the reagents. OH OHBr in ether O SOBr2, pyridine Br2 ONBS OHBr (aq)

1. Arrange the test samples in order of increasing reactivity with sodium bicarbonate? Explain briefly -Ethanoic acid, Butanoic acid, Benzoic acid 2. Arrange the test samples in order of increasing solubility in water? Explain briefly. -Ethylamine, Diethylamine, Aniline 3. Arrange the test samples in order of increasing basicity? Explain briefly. -NaOH, Ethylamine, Aniline

In electrophilic aromatic substitution reaction by drawing the structures of the compounds given below Explain which products will be formed as a result of its reaction with the nitronium ion.methoxybenzene, benzoic acid

Compare p-toluenesulfonic acid and Amberlyst-15 as catalysts that can be used to synthesis Methyl Diantilis. In a paragraph please summarize and explain the differences between these two catalysts. This summary should include both differences of chemical principles and laboratory practicality.

only the questions pls disregard the experiment results thank you

Choose from the options A-E and explain briefly by illustrations the chemistry behind each answer.

Write synthesis of Alizarine and Congo Red .

(a) calculate the theoretical yield, in grams, of trans-9-(2-phenylethenyl) anthracene. (b) Calculate the percent yield Data for the Synthesis of trans-9-(2-phenylethenyl)-anthracene: A Wittig Reaction Mass of filter paper: 0.688 g Mass of filter paper with product: 1.113 g Melting Point of Product: 129-130oC

Give the structure of possible product(s) during this reaction.More than one options may be correct.

Answer the following parts of the question about Azo dyes:a) Why are the azo compounds synthesized colored? b) Explain the difference between ingrain dyes and direct dyes.c) Also What precautions should be taken when working with diazonium salts and why?

Please explain it. ASAP

Restate the paragraph. The main objective of the laboratory activity was to make aspirin also known as acetylsalicylic acid in its scientific name. It was successfully done as aspirin was synthesized using the combination of salicylic acid and acetic anhydride. In this reaction, salicylic acid's hydroxyl group on the benzene ring interacted with acetic anhydride to generate an ester functional group. This is an esterification reaction that produces acetylsalicylic acid. Sulfuric acid was utilized as a catalyst to start the esterification reaction. Some unreacted acetic anhydride and salicylic acid, as well as sulfuric acid, aspirin, and acetic acid, remained in the solution after the reaction was completed. The process of crystallization was used to obtain pure crystals of a substance from an impure mixture. Upon completion of the lab, analysis, and calculations, , it is evident that the synthesis of aspirin is possible using these methods but that the yield will be relatively low

Rhodamine B is useful dye prepared in a manner very similar to fluorescein. Due to the nitrogen donating groups, rhodamine B absorbs 550 nm light and fluoresces 580 nm light. a) What color would you expect for a rhodamine B solution? b) What is the color of the fluoresced (emitted light)?

Q1/Do as required: 1-The role of H2SO4 in Preparation of Nitrobenzene. Explain 2- Preparation of Nitrobenzene in cool phase. 3-In an experiment Hydrolysis of Acetanilide What color does the litmus paper change to and why? 4-When acetanilide reacts with bromine (x), acctanilide gives p-bromo acetanil 5- why used strongly alkaline (NaOH)in Preparation of Aniline?

Need help reading NMR to identify compound.

Draw structures of aniline and cyclohexylamine and use appropriate factors to compare their basicity. Explain why AICI3 is a stronger Lewis acid than Al(CH3)3

Kevlar®, a polymeric aromatic amide, is synthesized from the monomers p-phenylenediamine (left) and terephthaloyl chlo-ride (right). The polymer strands are initially aligned randomly,but they are dissolved and spun to give a lightweight, flexible product that is five times stronger than steel of the same weight.(a) Describe this step in terms of a Lewis acid-base reaction. (b) Would you expect water or ammonia to react faster with an acid chloride? Explain.

Is any other acid good for catalyze nitration to aromatic ? The textbook use sulfuric acid as catalyst in the nitration to aromatic structure. Is there any other acid can do the same job ? Such as H3PO4. Please discuss.

II. From cyclohexane and toluene as a carbon base, synthesize : 3-(3-cyclohexenyl)benzoic acid

Dibuje la estructura del tinte azo que se obtendría como producto, a partir de la reacción entre 4-nitroanilina y 2-naftol. NH2 COH NO2

Topic: Organic Synthesis Involving Amines:  Propose an organic synthesis for 4-bromo-3-nitrophenol.  To achieve this, you can use any common reagents of your choosing, and your sole carbon source is 4-bromobenzoic acid.  Be sure to describe your process in the discussion text box and also attach a sketch of the stepwise progression of your synthesis process. Hint, this can be done in six major steps shown as reaction arrows. Six major reaction arrows would give one starting material, five intermediates, and one product.

question 17

In this lab you are performing your first organic synthesis and safety information on all the materials you are using must be obtained. Companies are required to provide material safety data sheets (MSDS) for chemical compounds they sell. Please examine the MSDS for acetic anhydride, available here. You will find GHS pictograms within the sheet that summarize the main hazards of this compound. The pictograms are essentially the same as the symbols on WHMIS labels, available here for reference. Based on the pictograms, whatare the main hazards for acetic anhydride? Select as many answers as appropriate however points will be deducted for incorrect guesses. Select one or more: Corrosive Flammable material Acute oral or inhalation toxicity Oxidizing material Carcinogen Self-reactive substance Gas under pressure