Q4 of 18 Page 9

Answer the following :

Write balanced equations for the reaction of sodium, potassium, and calcium in the cold water.

2K + 2H2O = 2KOH + H2


Potassium when reacts with water gives potassium hydroxide and hydrogen gas.


Ca + 2H2O = Ca(OH)2 + H2


Calcium reacts with water gives calcium hydroxide and release hydrogen gas.


2Na + 2H2O = 2NaOH + H2


Sodium reacts with water gives sodium hydroxide and release hydrogen gas.


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