why is there a reaction between the alkali metals and water?

Question

rubidium reacts violently with water, what chemical change causes that.

Answer 1

The Alkali Metals get more reactive as you go down the group from lithium, sodium, potasium, rubidum, cesium and then francium. The term alkali metals comes from their reaction with water, which produces an alkaline solution. During the water alkali metal reaction hydrosice is formed while the gas given off is hydrogen. This site has video clips showing the first the reacting with water and has a good discussion about the reactivity of these group 1 elements: http://www.patana.ac.th/parents/curriculum/Chemistry/units/LR504.html

Here are the basic alkali metal equation for the reaction with water: lithium + water = lithium hydroxide + hydrogen
2 Li(s) + 2 H2O(l) = 2 LiOH(aq) + H2(g)
All of the alkili metals follow this same reaction with water.

Answer 2

while Lithium reacts with water, it creates Lithium Hydroxide. The reaction is monovalent it extremely is Li is interior the comparable team as Na and ok and subsequently Li+ + H2O -> LiOH + H+ Now Li does not be floating around as a cation yet greater like a salt (which includes LiCl) and Cl- will react with proton (H+) and subsequently HCl. I confirmed cation ingredient so which you would be able to plug in any anion and comprehend the belief. solid good fortune

Answer 3

Simply put:
The alkali metals have a higher affinity
for oxygen than the hydrogen in the water.

Answer 4

Rb bein al alkali metal(gp IA) has only one electron in its outer shell, so it has a strong tendency to release that electron to form Rb(+) cation.
Being an alkali metal the 1st ionisation potential of Rb is also very low, which further facilitates the precess.

the Rb(+) ion reacts violently with water,and combines with the OH(-) ion present in it to form RbOH

2Rb + 2H2O => 2RbOH + H2