$\backslash$table$[[,\backslash$table$[[$Reaction using$],[$ethanoyl chloride$]],\backslash$table$[[$Reaction using$],[$ethanoic anhydride$]],\backslash$table$[[$Compare the$],[$information given in the$]]],[$By$-$product,Hydrogen chloride,Ethanoic acid,table and select which$],[$Reaction conditions,$\backslash$table$[[$Ice bath $($cooling$),$ pyridine$],[($solvent$),$ no catalyst, $15$ minutes$]],\backslash$table$[[80C,$ acid catalyst, no solvent, $20],[$minutes$]],\backslash$table$[[$the criteria that must be$],[$considered when$]]],[$Hazards with reagent,$\backslash$table$[[$Highly flammable, reacts violently$],[$with water, causes burns$]],\backslash$table$[[$Flammable$,$ harmful if swallowed,$],[$causes burns$]],($Maximum attempts: $3)],[$Hazards with by$-$product,Highly corrosive gas,Corrosive liquid,$],[$Cost per litre,$150,50,],[$Most reactive,$0,0],[$Low energy consumption,O$,0,$Check$],[$Low reagent cost$],[$No catalyst needed$],[$Least harmful reagent,,$0,],[$Least harmful by$-$product,,$0,],[\backslash$table$[[$Reagents$],[$Points $100$