Write equations for the reactions of
(ii) calcium and potassium with water
(ii) Calcium and Potassium with water
Calcium reacts with cold water to form Calcium Hydroxide and Hydrogen gas .
- Heat formed in this reaction is less violent and does not produce sufficient heat for hydrogen gas to catch fire.
- The piece of Calcium metal floats in water , because bubbles of hydrogen gas formed in the reaction, stick to the surface.
Potassium reacts violently with cold water to form Potassium Hydroxide , Hydrogen Gas and heat energy.
The reaction is very exothermic and produces large amounts of heat.