# group 2 elements reaction with water

Magnesium has a very slight reaction with cold water. The Facts. This page looks at the reactions of the Group 2 elements - beryllium, magnesium, calcium, strontium and barium - with air or oxygen. All the metals react with dilute hydrochloric acid to give bubbles of hydrogen and a colourless solution of the metal chloride. It uses these reactions to explore the trend in reactivity in Group 2. Reactions with dilute hydrochloric acid. Mg(OH) 2(s) + 2 HCl (aq) → MgCl 2(aq) + 2 H 2 O (l) The Mg ions remain 2+ The Oxygen is -2 in the OH-ion, and -2 in water. These hydroxides have a typical pH of 10-12. Group 2 oxides react with water to form a solution of metal hydroxides. The alkaline earth metals found in group 2 of the periodic table. This page looks at the reactions of the Group 2 elements - beryllium, magnesium, calcium, strontium and barium - with water (or steam). The Facts Beryllium Beryllium has no reaction with water or steam even at red heat. The group 2 metal is oxidised from an oxidation state of zero to an oxidation state of +2. oxides of group 2 react with water to form hydroxide ions (OH-) and alkaline solutions of the metal hydroxide give the equation for calcium oxide reacting with water CaO (s) + H2O (l) -> Ca2+ (aq) + 2OH- … The reactions with oxygen. Group 2 hydroxides dissolve in water to form alkaline solutions. The Facts. At high temperatures, beryllium reacts with the stream and produces hydrogen and white beryllium oxide. Group 2 elements all react with water in a similar way: Metal + Water --> Metal Hydroxide + Hydrogen. Reactions of the Group 2 elements with water. Illustrating the increase of reactivity with cold water going down Group 2 It explains why it is difficult to observe many tidy patterns. REACTIONS OF THE GROUP 2 ELEMENTS WITH WATER This page looks at the reactions of the Group 2 elements - beryllium, magnesium, calcium, strontium and barium - with water (or steam). The majority of alkaline earth metals on reaction with water produces the hydroxides. Magnesium Magnesium burns in steam to … The further you move down the group the more vigorous the reaction with water. M(s) + H 2 O(l) --> M(OH) 2 (aq) + H 2 (g) This is another example of a redox reaction. Formation of simple oxides. Chemical Reaction of Group II Elements with Water . On the whole, the metals burn in oxygen to form a simple metal oxide. They are beryllium, magnesium, calcium, strontium, barium and radium. Reaction with Water. Group 2 elements are called alkaline metals because they form alkaline solutions, hydroxides, when reacting with water and their oxides are found in the earth’s crust. Just like the alkali metals the alkaline earth metals also react with the water and produce the hydroxides. ALKALINE METALS They have low electron affinity. The Group 2 elements react with water to form hydroxides with the general formula M(OH) 2 and hydrogen gas. Group 2 - Alkaline Earth Metals. 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