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Cesium with Water

The reaction of cesium with water containing phenolphthalein is shown.

Discussion

Solid cesium is added to a beaker containing water, with phenolphthalein present as an indicator. The equation for the reaction is

2 Cs(s) + 2 H2O(l) ---> 2 CsOH(aq) + H2(g)

The evolution of a pink color verifies the generation of a base.

Narration

This video does not include sound.