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Which compound reacts with warm dilute aqueous sodium hydroxide? A - AQA - A-Level Chemistry - Question 31 - 2021 - Paper 3
Question 31
Which compound reacts with warm dilute aqueous sodium hydroxide? A. C4H6 B. CH2=CH-CH2 C. CH3CH2CH-NH2 D. (CH3CO)2O
Worked Solution & Example Answer:Which compound reacts with warm dilute aqueous sodium hydroxide? A - AQA - A-Level Chemistry - Question 31 - 2021 - Paper 3
Step 1
Which compound reacts with warm dilute aqueous sodium hydroxide?
Answer
In this question, we need to identify which of the provided compounds reacts with warm dilute aqueous sodium hydroxide.
To solve this, we consider the nature of each compound:
- A. C4H6: This compound is an alkyne, which generally do not react with dilute bases.
- B. CH2=CH-CH2: This is an alkene; alkenes can undergo side reactions but are not known to react with dilute NaOH in warm conditions.
- C. CH3CH2CH-NH2: This is an amine, which may undergo some reactions with bases but is not typically reactive with dilute sodium hydroxide.
- D. (CH3CO)2O: This is acetic anhydride, which reacts with NaOH to form sodium acetate and can undergo hydrolysis in water, especially when warmed.
Thus, the correct answer is D. (CH3CO)2O.