Safety: Weigh the zinc dust in a hood. Heat sodium hydroxide and zinc dust using the ventilation grating in Chem 140 or in a chemical fume hood. Use tongs to handle the pennies. Use caution with hot ...

The exothermic reaction is the crystallisation of sodium ethanoate, and the endothermic reaction is the reaction of barium hydroxide with ammonium chloride. Jon describes an easy way to remember ...