Question bank: Organic Reactions: Organic Reaction Problems

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Question 1:

Medium

When a saturated alkane is oxidized, carboxylic acids are formed. Which of these reactions correctly represents this process?

Organic Reactions: Organic Reaction Problems

Question 2:

Medium

A research laboratory intends to synthesize ethyl ethanoate ester, commonly used as a solvent and flavoring agent, from acetic acid and ethanol through an esterification reaction. a) Identify the reagents and the expected product of this chemical reaction. b) Write the balanced chemical equation that describes the esterification reaction between acetic acid and ethanol, including the catalyst used in this type of reaction. c) Propose a method to isolate ethyl ethanoate ester from the other components of the reaction mixture after synthesis.

Organic Reactions: Organic Reaction Problems

Question 3:

Very Hard

An organic substance A, with the molecular formula C4H8O2, reacts with a strong base, B, forming an alkane and an alcohol. The reaction follows a mechanism of elimination and nucleophilic addition. The alkane formed is unsaturated and exhibits geometric isomerism, while the alcohol is a secondary alcohol. Based on this information, identify the substance A and propose a reaction mechanism that explains the formation of the alkane and the alcohol. Discuss the ideal conditions for an elimination and nucleophilic addition reaction to occur instead of an electrophilic substitution reaction. Then, justify the role of the strong base B in the proposed mechanism, and how its presence influences the formation of the secondary alcohol. Also explain how the unsaturated nature of the formed alkane can be confirmed through chemical tests, without the use of spectroscopy. Consider the ideal laboratory conditions for the reaction to take place.

Organic Reactions: Organic Reaction Problems

Theorical Question

Contextualized Question

Question 4:

Medium

Organic Reactions: Organic Reaction Problems

Question 5:

Medium

Consider the reaction of acid hydrolysis of a cyclic amide, which occurs by adding water in an acidic medium, resulting in the breaking of the cyclic ring and the formation of a carboxylic acid and a new organic compound. Write the general equation of this reaction, identifying the new organic compound formed and justifying its structure based on the principles of organic chemistry. In addition, explain the role of the acid in the reaction, detailing the mechanisms involved that lead to the breaking of the ring and the formation of the products. Consider the following cyclic amide as an example: 3,4-dihydro-2H-pyrrol-2-one (lactam).

Organic Reactions: Organic Reaction Problems

Theorical Question

Contextualized Question

IARA TIP

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