Organic Chemistry Answers

• What property of amines is responsible for them being basic?
• Suggest two ways of increasing the basicity of an amine and give specific examples of its application.

Primary amines can be prepared from amides by the Hoffman's reaction.

• Write a general equation for the equation.
• Give the reagents and reaction conditions for the reacton.

Give the names and structures of a primary, secondary, and tertiary amine with molecular formula C₃H₉N.

An organic compound A made up of 87.8% Carbon and 12.2% Hydrogen; reacts with cold dilute KMnO₄ to yield D (C₆H₁₂O₂). A takes up only one mole of hydrogen gas to form B when hydrogenated. A also decolourises aqueous Bromine to form C. (RAM of C = 12, H = 1.00, O = 16)

1. In one experiment, 4.1g of A gave 4.0g of D. Calculate the percentage yield.
2. Compound A is found to be optically inactive. Explain
3. Refluxing D with acidified K₂Cr₂O₇ give E. Give the structure and name of E

An organic compound A made up to 87.8% Carbon and 12.2% Hydrogen; reacts with cold dilute KMnO₄ to yield D (C₆H₁₂O₂). A takes up only one mole of hydrogen gas to form B when hydrogenated. A also decolourises aqueous Bromine to form C. (RAM of C = 12, H = 1.00, O = 16)

• Determine the molecular formula of A. Hence give the structures of A, B, C & D
• Compound C and D exist in several configurations. Draw the structures of any two configurations of either C or D.

For each of the following pairs of compounds, describe a simple chemical or physical test to distinguish between them, stating specific observations.

• CH₃CH₂CH₂OH and CH₃CHOHCH₃

• CH₃CH₂CH=CH₂ AND CH₃CH=CHCH₃

For each of the following pairs of compoounds, describe a simple chemical or physical test to distinguish between them, stating specific obsrvations.

• CH₃COCl & CH₂ClCO₂H
• CH₃CN & CH₃CO₂NH₄
• HCO₂CH₃ & CH₃CO₂CH₃

Define the following:

• Homolytic fission
• Heterolytic fission
• Resonance effect
• Inductive effect

An organic compound is composed of Carbon, hydrogen, oxygen, and Chlronie.

• One mole of the compound reacts completely with one mole of ethanol. If 1.57g of the compound required 0.92g of ethanol. Find the molecular weight and give the molecular formular of the compound
• The compound hydrolyses readily in water. Give its structural formula, name and write the equation for the reaction.

An organic compound is composed of Carbon, hydrogen, oxygen and Chlronie.

(a) Describe a simple chemical test to show the presence of chlorine in the compound.

1.57g of the compounds on analysis yielded 1.76g of carbon dioxide, 0.54g of water and 2.87g of silver chloride. Find the empirical formula of the compound.