The flow diagram below shows how compound A can be used as a starting reactant to prepare two different compounds. I, II and III represent three organic reactions. Compound A C₃H₅C(CH₃)BrCH₂CH₃ Compound B C₅H₁₀ (major product) Compound C C₅H₁₂O (major product) 4.1 Is compound A a PRIMARY, SECONDARY or TERTIARY haloalkane? Give a reason for the answer. 4.2 Consider reaction I. 4.2.1 Besides heat, write down the other reaction condition needed. 4.2.2 Write down the type of reaction that takes place. 4.2.3 Using STRUCTURAL FORMULAE for the organic compounds, write down a balanced equation for the reaction. 4.3 Consider reaction II. Write down the: 4.3.1 STRUCTURAL FORMULA of compound C. 4.3.2 NAME or FORMULA of the inorganic reagent needed. 4.3.3 Type of addition reaction that takes place. 4.4 Consider reaction III. 4.4.1 Write down the type of reaction that takes place. 4.4.2 Write down a balanced equation for the reaction.

NSC Physical Sciences Organic Compounds and Macromolecules: The flow diagram below shows how

The flow diagram below shows how compound A can be used as a starting reactant to prepare two different compounds - NSC Physical Sciences - Question 4 - 2022 - Paper 2

Question 4

The-flow-diagram-below-shows-how-compound-A-can-be-used-as-a-starting-reactant-to-prepare-two-different-compounds-NSC Physical Sciences-Question 4-2022-Paper 2.png

The flow diagram below shows how compound A can be used as a starting reactant to prepare two different compounds. I, II and III represent three organic reactions. ... show full transcript

Worked Solution & Example Answer:The flow diagram below shows how compound A can be used as a starting reactant to prepare two different compounds - NSC Physical Sciences - Question 4 - 2022 - Paper 2

Step 1

Is compound A a PRIMARY, SECONDARY or TERTIARY haloalkane? Give a reason for the answer.

96%

114 rated

Answer

Compound A is a tertiary haloalkane. This is because the carbon atom bonded to the halogen (bromine) is connected to three other carbon atoms.

Step 2

Consider reaction I. Besides heat, write down the other reaction condition needed.

99%

104 rated

Answer

The other reaction condition needed is a concentrated strong base such as NaOH, KOH, or LiOH.

Step 3

Consider reaction I. Write down the type of reaction that takes place.

96%

101 rated

Answer

The reaction that takes place is an elimination reaction, specifically dehydrohalogenation.

Step 4

Consider reaction I. Using STRUCTURAL FORMULAE for the organic compounds, write down a balanced equation for the reaction.

98%

120 rated

Answer

The balanced equation for the reaction is:

ext{C₃H₅C(CH₃)BrCH₂CH₃} + ext{NaOH} ightarrow ext{C₅H₁₀} + ext{NaBr} + ext{H₂O}

Step 5

Consider reaction II. Write down the STRUCTURAL FORMULA of compound C.

97%

117 rated

Answer

The structural formula of compound C is:

       H
       |
H - C - O - H
       |
       H

Step 6

Consider reaction II. Write down the NAME or FORMULA of the inorganic reagent needed.

97%

121 rated

Answer

The inorganic reagent needed is Water (H₂O).

Step 7

Consider reaction II. Write down the type of addition reaction that takes place.

96%

114 rated

Answer

The type of addition reaction that takes place is Hydration.

Step 8

Consider reaction III. Write down the type of reaction that takes place.

99%

104 rated

Answer

The type of reaction that takes place in reaction III is a hydrolysis reaction.

Step 9

Consider reaction III. Write down a balanced equation for the reaction.

96%

101 rated

Answer

The balanced equation for reaction III is:

ext{C₅H₁₀} + ext{H₂O} ightarrow ext{C₅H₁₂O}

The flow diagram below shows how compound A can be used as a starting reactant to prepare two different compounds - NSC Physical Sciences - Question 4 - 2022 - Paper 2

Worked Solution & Example Answer:The flow diagram below shows how compound A can be used as a starting reactant to prepare two different compounds - NSC Physical Sciences - Question 4 - 2022 - Paper 2

Is compound A a PRIMARY, SECONDARY or TERTIARY haloalkane? Give a reason for the answer.

Consider reaction I. Besides heat, write down the other reaction condition needed.

Consider reaction I. Write down the type of reaction that takes place.

Consider reaction I. Using STRUCTURAL FORMULAE for the organic compounds, write down a balanced equation for the reaction.

Consider reaction II. Write down the STRUCTURAL FORMULA of compound C.

Consider reaction II. Write down the NAME or FORMULA of the inorganic reagent needed.

Consider reaction II. Write down the type of addition reaction that takes place.

Consider reaction III. Write down the type of reaction that takes place.

Consider reaction III. Write down a balanced equation for the reaction.

Join the NSC students using SimpleStudy...