The Facts. Magnesium has a very slight reaction with cold water. Illustrating the increase of reactivity with cold water going down Group 2 This page looks at the reactions of the Group 2 elements - beryllium, magnesium, calcium, strontium and barium - with common acids. The Facts Beryllium Beryllium has no reaction with water or steam even at red heat. Such reaction is: $$ MgO_{(s)} + H_{2}O_{(l)} \rightarrow Mg(OH)_{2(aq)} $$ Group 2 hydroxides. Group 2 hydroxides dissolve in water to form alkaline solutions. It uses these reactions to explore the trend in reactivity in Group 2. At high temperatures, beryllium reacts with the stream and produces hydrogen and white beryllium oxide. Reaction of group 2 oxides with water. The Hydrogen is +1 in the OH-ion and HCl, and +1 in water. Formation of simple oxides. Reaction of Alkaline Earth Metals with Water. Group 2 oxides react with water to form a solution of metal hydroxides. They are beryllium, magnesium, calcium, strontium, barium and radium. M(s) + H 2 O(l) --> M(OH) 2 (aq) + H 2 (g) This is another example of a redox reaction. The group 2 metal is oxidised from an oxidation state of zero to an oxidation state of +2. Just like the alkali metals the alkaline earth metals also react with the water and produce the hydroxides. Reaction with Water. The reactions with oxygen. Chemical Reaction of Group II Elements with Water . It uses these reactions to explore the trend in reactivity in Group 2. 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. Magnesium Magnesium burns in steam to … These hydroxides have a typical pH of 10-12. ALKALINE METALS They have low electron affinity. Reactions with dilute hydrochloric acid. The Group 2 elements react with water to form hydroxides with the general formula M(OH) 2 and hydrogen gas. This page looks at the reactions of the Group 2 elements - beryllium, magnesium, calcium, strontium and barium - with water (or steam). It explains why it is difficult to observe many tidy patterns. The alkaline earth metals found in group 2 of the periodic table. 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. REACTIONS OF THE GROUP 2 ELEMENTS WITH WATER. Group 2 elements all react with water in a similar way: Metal + Water --> Metal Hydroxide + Hydrogen. The further you move down the group the more vigorous the reaction with water. Calcium, strontium and barium react with cold water and the reactivity increases from calcium to … Group 2 - Alkaline Earth Metals. The majority of alkaline earth metals on reaction with water produces the hydroxides. On the whole, the metals burn in oxygen to form a simple metal oxide. 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