The reaction of potassium and water is a highly exothermic reaction, meaning that it releases a lot of energy. The enthalpy change of the reaction is -33.62 kJ/mol. This means that for every mole of potassium that reacts with water, 33.62 kJ of energy is released.

To put this in perspective, the combustion of 1 mole of hydrogen gas releases 285.8 kJ of energy. So, the reaction of potassium and water releases about 12% as much energy as the combustion of hydrogen gas.

However, the reaction of potassium and water is much more violent than the combustion of hydrogen gas. This is because the reaction of potassium and water produces hydrogen gas very quickly. The hydrogen gas then ignites, producing a small explosion.

The reaction of potassium and water is also dangerous because it produces potassium hydroxide, which is a strong base. Potassium hydroxide can cause severe burns to the skin and eyes.

Therefore, it is important to handle potassium metal with caution. Potassium metal should never be mixed with water or any other liquid that contains water.
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