Why is water avoided in the Grignard Synthesis of Benzoic Acid experiment? Write an equation for the reaction of the Grignard reagent prepared in this experiment with water.
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Why is water avoided in the Grignard Synthesis of Benzoic Acid experiment? Write an equation for the reaction of the Grignard reagent prepared in this experiment with water.
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- Why is it necessary to keep all materials dry in Grignard reactions?Select all the following statements that are correct. A. The Schiff test can be used to test for presence methyl ketones. B. The Schiff reagent is the bulky nucleophile that adds to aldehydes giving a highly coloured product. C. The Tollens' test oxidizes an aldehyde to a carboxylic acid. D. The Tollens' test can be used to test for the presence of ketones. E. The lodoform test can be used to test for the presence of methyl ketones. 2Select all the following statements that are correct. A. The Tollens' test can be used to detect the presence of ketones. B. A positive Tollens' test results in the formation of a silver mirror. C. A positive Schiff test results in the formation of a magenta coloured product. D. A positive Iodoform test results in the formation of a bright yellow precipitate. E. A positive Iodoform test results in the formation of a white precipitate.
- A certain compound is known to contain an aromatic benzene ring but failed to produce a fragrant yellow solution upon subjecting it to the nitration test. What may be a possible explanation for this? A. The benzene ring is part of a highly conjugated, blue dye molecule. B. The benzene ring contains a strong electron-withdrawing group. C. The benzene ring has no available sites left for electrophilic attack. D. All of the given. Kindly explain your answer in detail.Preamble: A student chemist in an attempt to synthesise compound B from the aromatic aldehyde. 24. What is the reaction name for the chemical transformation of A to BA. reductive aminationB. catalytic reductionC. carbonyl dehydrationD. Hofmann eliminationE. Aldehyde rearrangementWhy do we have to oven-dry the glassware used in the Grignard Reaction? A. Because Grignard reagent will react with water and be quenched B. Because ketone will react with water to form hydrate C. Because ketone will get protonated by water and thus unreactive D.None of the answer is correct
- what is a role of grignard reagent in this reaction.Under basic reaction conditions, two molecules of benzaldehyde condense to give: a. Benzyl alcohol and Benzoic acid b. Benzyl alcohol and sodium benzoate c. Benzoic acid and phenol d. Benzyl alcohol and benzylic acid Under which reaction conditions, Benzil rearrange to benzilate? a. Strongly acidic conditions b. Neutral conditions c. Strongly basic conditions d. Mild acidic conditions In benzoin experiment two traps where used, one in the first step and another in the second step, in order to prevent the escape of (respectively) a. NaOH aq, hydrocyanic acid b. Nitrogen oxides, hydrocyanic acid C. HBr gas, N20 gas d. Hydrocyanic acid, Nitrogen oxidesExplain the experimental procedure of the laboratory preparation of the synthesis of benzyl chloride from phenol Explain the chemistry behind the synthesis of benzyl chloride from phenol
- Explain why the heat of neutralization involving acetic acid and hydroxidesodium is lower than the value found in the neutralization reaction involving hydrochloric acid and the sodium hydroxide.Select all the following statements that are correct. A. A positive Tollens' test forms a silver mirror on the surface of the glassware that it is performed in. B. The Schiff test reagent is a bulky nucleophile that preferentially adds to the carbonyl group of a ketone. C. A positive Tollens' test oxidizes an aldehyde to a carboxylic acid. D. The Tollens' test can be used to detect the presence of ketones. E. The lodoform test will give a positive result for acetaldehyde.Why is acetic acid used as reagent? What would happen if you used HCl instead?