Questions and Answers
Ferric Chloride Test is also known as which of the following?
What is the main purpose of the ferric test?
To identify the presence of phenolic compounds in a sample.
What does the ferric chloride test determine?
The presence of phenols in a sample or compound.
What is the reagent used in the ferric chloride test?
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______________ component colors the fluid red-orange in the ferric chloride test.
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What are the reactants of the ferric chloride test?
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If Hydroxybenzene (phenol) is present in the ferric chloride test, what color indicates a positive result?
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What color indicates a positive result for 2-Naphtol in the ferric chloride test?
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In the ferric chloride test, what color indicates a positive result for Gallic acid?
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What indicates a positive reaction for Sulfosalicylic acid in the ferric chloride test?
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What indicates a negative reaction in the ferric chloride test?
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Ferric chloride reacts with aromatic alcohols but does not react with ____________.
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What colors indicate a positive reaction in the ferric test?
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Study Notes
Ferric Chloride Test Overview
- Ferric Chloride Test (FCl3) is commonly used in chemistry, environmental sciences, and pharmaceuticals.
- It effectively identifies the presence of phenolic compounds in various samples.
Key Components
- Ferric chloride (iron chloride) is the reagent used in this test.
- When phenolic compounds are present, the fluid undergoes color changes.
Phenolic Compounds and Reactions
- Hydroxybenzene (phenol), 2-Naphtol, Gallic acid, Sulfosalicylic acid, and Salicylic acid are the main reactants in the Ferric Chloride Test.
- Each compound produces distinct color reactions indicating a positive result.
Color Indicators of Positive Reactions
- Hydroxybenzene (phenol) produces a purple color.
- 2-Naphtol gives a green color.
- Gallic acid results in a dark-blue to blue color change.
- Sulfosalicylic acid yields a violet color.
- Salicylic acid leads to red or red-brown coloration.
Interpretation of Results
- A positive reaction is indicated by color changes such as purple, blue, red-brown, violet, or green.
- If no color change occurs after adding FeCl3, it signifies the absence of phenols, resulting in a negative reaction.
Other Considerations
- Ferric chloride does not react with aliphatic alcohols, highlighting its specificity for aromatic alcohols.
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Test your knowledge of the Ferric Chloride Test with these flashcards. This quiz covers definitions and applications of the ferric test used in chemistry and environmental sciences for identifying phenolic compounds. Ideal for students and professionals in related fields.
