Sometimes the hydrogen produced catches fire with oxygen in the air. Using warm water promotes a vigorous reaction. Use the periodic table to predict the relative rate of reaction of the following metals with water. Li Na K Rb Explain your answer. Go to Top Teachers Guide Purpose To demonstrate the vigorous reaction of sodium in water.
Hints Follow the precautions carefully.
Fires and burns are possible. Flying debris from explosions resulting from misuse of sodium may cause severe injury. Phenolphthalein is toxic. Store only enough to use for this demonstration for the school year, and no more than 10 grams. Wrap the bottle in a heavy-weight polyethylene bag.