Question

reaction of metals with water?

Answer 1

2Na(s)+2H-OH(l)-> 2NaOH(l)+H2(g)

Answer 2

A few very reactive metals will react with cold water. Potassium's reaction is the most violent that you are likely to encounter in the science lab.

Potassium, sodium, lithium and calcium all react very fast when placed in water.The products of the reaction in each case are a metal hydroxide (froming an alkaline solution) and hydrogen gas.The chemical equation for potassium reacting with water is:2K + 2H2O → 2KOH + H2(potassium + water → potassium hydroxide (an alkali) + hydrogen)Magnesium requires the water to be in the form of steam for a clearly observable reaction to take place. This metal is less reactive than potassium, sodium, lithium, and calcium.For example -Mg + 2H2O → Mg(OH)2 + H2(magnesium + water → magnesium hydroxide + hydrogen)