30 Questions
What color change would indicate a positive phenol test using pH paper?
Blue to red
What color change would signify a positive phenol test using Ferric Chloride?
Pale yellow to purple
Which test would confirm the presence of Methyl Ketone?
Iodoform test (I2, NaOH) - Colorless to cloudy pale yellow
Which compound would not react with Br2?
Alcohol
Select the product of the reactions shown in questions 7-9.
Option A
What is the IUPAC name of the compound 2,3-dimethylpentane?
2,3-dimethylpentane
Which type of reaction is demonstrated in questions 7-9?
Addition reaction
What is the oxidation product (X) of the given reaction?
3
Which alcohol would not react with CrO42-?
12
Which compound will react with Fe+3 ion in iron(III) chloride solution to give a purple color?
C
What is the name of the compound shown in the image?
5-methylpentanone
What is the IUPAC name of the given compound?
2-methylbutanone
What functional group is identified by the suffix '-ide' in the chemical name?
Alkyl Halide
In Lewis structures, what does the presence of a carbonyl group signify?
Presence of C-(COO)-C bond
What color change indicates a positive result in a bromine test for alkenes and alkynes?
Orange to colorless
Which compound undergoes a color change from orange to greenish blue in a Chromic Acid test?
3° Alcohol
What is the main product of combustion reactions of hydrocarbons?
$CO_2$ and $H_2O$
Which functional group contains a bond -(COX)?
Acid Halide
What type of reaction is showcased in questions 7-9?
Addition reaction
Which compound(s) exemplifies a primary alcohol?
Compound A
What is the oxidation product (X) in the provided reaction?
Aldehyde
Which alcohol would not react with CrO4^2-?
Tertiary alcohol
What statement accurately describes the solubility of alcohols?
Polarity of hydroxyl group makes alcohols to be soluble in water by forming hydrogen bonds
Which compound reacts with Fe^3+ ions to give a purple color in FeCl3 solution?
Compound C
Which compound would form a yellow solid in the iodoform test but not react with Benedict’s reagent?
Compound Y
What is the product of the reactions shown in questions 20 and 21 from compounds A-D?
Cannot be determined from the information given
Which structural formula corresponds to the IUPAC name 'Propene'?
A
Which compound falls under the functional group 'Amphiphile'?
Compound X
Which compound is classified as an 'Amine'?
Compound Z
Which compound is likely to be classified as an 'Alkene'?
Compound Y
Study Notes
Functional Groups
- Identify functional groups presented in Lewis, Condensed, and Line-angle (skeletal) structures
- Identify functional groups by suffix in chemical names
- Examples of functional groups:
- Ketone: contains C-(C=O)-C bonds
- Aldehyde: contains C-(C=O)-H bonds
- Alkyl Halide: X: Br – alkyl bromide, X: Cl – alkyl chloride, X: I – alkyl iodide, X: F – alkyl fluoride
- Carboxylic Acid: contains C-(COOH) bond
- Ester: contains C-(COO)-C bond
- Amide: contains C-(CO2N)- bond
- Nitrile: contains -(CN) bond
- Acid Halide: contains -(COX) bond
- Acid Anhydride: contains -(CO)O(CO)- bond
Lewis to Condensed Structures
- Be able to match Lewis structure to the correct condensed structure and vice-versa
Safety Materials
- Review safe practices for being in the laboratory
Reactions and Test Results
- Hydrocarbons: Combustion
- Balance combustion reactions
- Products: carbon dioxide (CO2) and water (H2O)
- Alkanes: Radical Halogenation (UV light)
- Predict brominated products
- Alkene/Alkynes (unsaturation)
- Bromine test (no UV): Orange → colorless (POSITIVE test)
- Baeyer's Test (Potassium Permanganate): Purple → brown (POSITIVE test)
- Alcohols
- Identify 1°, 2°, and 3° alcohols
- Chromic Acid (H2CrO4) test: orange → greenish blue (POSITIVE test)
- Phenol test: pH paper (Blue → RED, POSITIVE test)
- Phenol test: Ferric Chloride (pale yellow → purple, POSITIVE test)
- Aldehydes and Ketones
- Methyl Ketone: Iodoform test (I2, NaOH) (colorless → cloudy pale yellow, POSITIVE test)
- Aldehyde: Tollen's Test (AgNH3, NaOH) (→ silver mirror, POSITIVE test)
Exam Questions
- Classification of compounds according to their functional groups
- IUPAC naming of compounds
- Predicting products of reactions
- Identifying type of reaction (Elimination, Addition, Replacement, etc.)
- Solubility of alcohols
- Reactivity of compounds with certain reagents (Br2, Fe+3, etc.)
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