This question is about the reaction scheme shown - AQA - A-Level Chemistry - Question 10 - 2022 - Paper 2
Question 10
This question is about the reaction scheme shown.
step 1 step 2 step 3
CH3 NH2 CH... show full transcript
Worked Solution & Example Answer:This question is about the reaction scheme shown - AQA - A-Level Chemistry - Question 10 - 2022 - Paper 2
Step 1
step 1
96%
114 rated
Only available for registered users.
Sign up now to view full answer, or log in if you already have an account!
Answer
The reagents needed for step 1 are concentrated nitric acid (
HNO3) and concentrated sulfuric acid (H2SO4), which are required for the nitration of toluene to form nitrotoluene.
Step 2
step 2
99%
104 rated
Only available for registered users.
Sign up now to view full answer, or log in if you already have an account!
Answer
The reagents needed for step 2 are tin (Sn) and hydrochloric acid (HCl) which are used for the reduction of nitrotoluene to aniline.
Step 3
step 3
96%
101 rated
Only available for registered users.
Sign up now to view full answer, or log in if you already have an account!
Answer
The name of the mechanism for the reaction in step 3 is nucleophilic addition-elimination.
Step 4
step 4
98%
120 rated
Only available for registered users.
Sign up now to view full answer, or log in if you already have an account!
Answer
The reagent for step 4 is chlorine (Cl2). A necessary condition for this reaction is the presence of UV light to initiate the reaction.
Step 5
step 5
97%
117 rated
Only available for registered users.
Sign up now to view full answer, or log in if you already have an account!
Answer
In step 5, amine B is formed through further substitution. The yield is less than that of amine A because the reaction may lead to the formation of multiple products, including by-products from further substitutions.
Step 6
step 6
97%
121 rated
Only available for registered users.
Sign up now to view full answer, or log in if you already have an account!
Answer
Amine B is a stronger base than amine A because the presence of the acetyl group (
COCH3) in amine B enhances the electron density on the nitrogen atom through resonance and inductive effects, allowing it to better accept protons compared to amine A.
