Chloroethane can be used to make sodium propanoate.
chloroethane $\to$ intermediate Q $\to$ sodium propanoate
Intermediate Q is hydrolysed with boiling aqueous NaOH to give sodium propanoate.
Which reagent would produce intermediate Q from chloroethane?
1 )
concentrated ammonia solution
2 )
dilute sulfuric acid
3 )
hydrogen cyanide in water
potassium cyanide in ethanol
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