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Hydrogen cyanide reacts with propanone in the presence of potassium cyanide - CIE - A-Level Chemistry - Question 39 - 2019 - Paper 1

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Hydrogen cyanide reacts with propanone in the presence of potassium cyanide. Which statements about this reaction are correct? 1 The cyanide ion is a catalyst for... show full transcript

Worked Solution & Example Answer:Hydrogen cyanide reacts with propanone in the presence of potassium cyanide - CIE - A-Level Chemistry - Question 39 - 2019 - Paper 1

Step 1

1 The cyanide ion is a catalyst for the reaction.

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Answer

This statement is incorrect. The cyanide ion is not a catalyst; it participates in the reaction as a reactant.

Step 2

2 This is an addition reaction.

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Answer

This statement is correct. The reaction between hydrogen cyanide and propanone involves the addition of the cyanide ion to the carbonyl group of propanone, forming a cyanohydrin.

Step 3

3 The intermediate behaves as a base.

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Answer

This statement is correct. The intermediate formed during the reaction can act as a base because it can accept protons.

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