Laboratory Tests: Tollen's Test and Benedict's Test

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What color does copper (II) ion turn into after being reduced in the Benedict’s test?

Red

What is the purpose of using Benedict’s test in clinical laboratories?

To test for the presence of reducing agents in urine.

What happens to the aldehyde group in a compound when Benedict’s reagent is added during the Benedict’s test?

It is oxidized to the carboxylic ion.

What type of condensation reaction involves the addition of one aldehyde to another with bases as a catalyst?

<p>Aldol condensation</p> Signup and view all the answers

What characteristic distinguishes an aldehyde condensation product?

<p>It has an increased carbon chain.</p> Signup and view all the answers

In living systems, how are carbohydrates primarily prepared?

<p>By enzyme-catalyzed aldol condensation reactions.</p> Signup and view all the answers

What class of compounds contain the carbonyl group?

<p>Aldehydes and Ketones</p> Signup and view all the answers

Which compound is an example of an aldehyde?

<p>Benzaldehyde</p> Signup and view all the answers

What is the product when primary alcohols are oxidized?

<p>Aldehydes</p> Signup and view all the answers

Which type of reaction results in the formation of aldehyde hydrates?

<p>Addition of water</p> Signup and view all the answers

What is the product formed when a hemiacetal reacts with excess alcohol?

<p>Acetal + water</p> Signup and view all the answers

What is formed when aldehydes react with alcohols in the presence of an acid catalyst?

<p>Hemiacetals, acetals, hemiketals, and ketals</p> Signup and view all the answers

Which functional groups are present in a hemiketal?

<p>Alkoxy and alcohol groups</p> Signup and view all the answers

What is formed when a ketone reacts with an alcohol?

<p>Ketal + water</p> Signup and view all the answers

What products are formed from the reduction of aldehydes and ketones, respectively?

<p>Primary/Secondary alcohols</p> Signup and view all the answers

Why are aldehydes easily oxidized compared to ketones?

<p>Less reactive C-H bond</p> Signup and view all the answers

What is an important chemical difference between aldehydes and ketones that is used in chemical tests for their distinction?

<p>Reactivity of the C-H bond</p> Signup and view all the answers

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