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Organic Chemistry Lab Techniques Quiz

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Questions and Answers

What drives aldol condensations to completion?

Equilibrium

Increased concentration

Endothermic reaction

Exothermic detection (correct)

In a crossed aldol condensation, why must the compounds be carefully selected?

To increase the reaction rate

To change the reaction mechanism

To enhance the yield of the product

To avoid unwanted product mixtures (correct)

Why is benzaldehyde considered an excellent reagent for crossed aldol condensations?

It lacks alpha hydrogens (correct)

Due to its green color

It can form an enolate ion

It is highly reactive

What type of condensation reaction is used for the synthesis of dibenzalacetone?

Claisen-Schmidt condensation Signup and view all the answers

Why is it important for one of the reactants in a crossed aldol condensation to be particularly electrophilic toward enolates?

To prevent side reactions Signup and view all the answers

What characteristic makes benzaldehyde suitable for crossed aldol condensations?

Lacks achydrogens Signup and view all the answers

What is the purpose of the experiment described in the text?

To study the condensation reactions of organic compounds Signup and view all the answers

Why is it important to wear departmentally approved safety goggles in the chemistry laboratory?

To prevent exposure to toxic compounds Signup and view all the answers

What is a key feature of an aldol product?

Contains both an aldehyde group and an alcohol group Signup and view all the answers

Which compound is mentioned as toxic and a suspected carcinogen?

Benzaldehyde Signup and view all the answers

What type of molecules are combined in an aldol condensation reaction?

Carbonyl compounds Signup and view all the answers

Why are hydrogens adjacent to a carbonyl group weakly acidic?

Due to resonance stabilization of resulting ions Signup and view all the answers