Give three examples of reaction between metals and water, to show that diffrent metals have diffrent reactions
Answers
Answer:
According to their specific reactivity, each metals react differently with water. 1) Sodium literally explodes on contact with water. 2) When hot boiling water is poured over magnesium metal, magnesium hydroxide is formed. 3) Iron reacts with steam only to give its hydroxide.
I don't know that is this confirm answer because this is myself answer.
Explanation:
Reaction of Potassium with water
When potassium reacts with water then potassium hydroxide and hydrogen gas are formed. Lot of heat is produced during this reaction. Following equation shows this reaction.
K + H2O ⇨ KOH + H2
Reaction of Calcium with water
When calcium reacts with water, then calcium hydroxide and hydrogen gas are formed. This too is an exothermic reaction. When bubbles of hydrogen gas stick to metal then calcium starts floating. Following equation shows this reaction.
Ca + 2H2O ⇨ Ca(OH)2 + H2
Reaction of Magnesium with water
Magnesium does not react with cold water. It reacts with hot water and forms magnesium hydroxide and hydrogen gas. Magnesium starts floating due to hydrogen bubbles sticking to the meatl. Following equation shows this reaction.
Mg + 2H2O ⇨ Mg(OH)2 + H2