The two chemicals mix and form deady hydrocyanic acid. The person loses consciousness in seconds and usually dies within five minutes. Prisoner is brought into a special room called a death chamber and is strapped into an electric chair. Metal plates called electrodes are attached to the crown of the prisoner's head and to the calf of one leg. Electric current causes almost immediate death.
Prisoner stands on platform with a noose of rope around the neck.
After trap door opens, person falls until jerked to a stop by rope. The sudden jolt breaks the neck, causing almost immediate loss of consciousness then death. Inmate is shot by executioners.