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OCR AS Chemistry- nucleophilic subs. reaction

When writing out the mechanism for nucleophilic subsitituition between a haloalkane and nucleophile like KCN, is it fine to leave out the K ?? eg,
bromoethane with ethanolic KCN, and just show the reaction with CN?
ive seen this in vids online but idk if it is allowed in the spec
Original post by Nat4695
When writing out the mechanism for nucleophilic subsitituition between a haloalkane and nucleophile like KCN, is it fine to leave out the K ?? eg,
bromoethane with ethanolic KCN, and just show the reaction with CN?
ive seen this in vids online but idk if it is allowed in the spec

The potassium cyanide is ionic - there is no KCN. Both of the ions are dissociated. The nucleophile is CN-
Reply 2
Original post by charco
The potassium cyanide is ionic - there is no KCN. Both of the ions are dissociated. The nucleophile is CN-

ohhh yea i completely forgot theyve dissociated, thank you sm!
Reply 3
Just to add that if asked for the reagent used, you must say KCN. Otherwise CN- is what you write for mechanisms etc.

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