9. How is sodium chloride different from its constituent elements, sodium and chlorine in its properties ? Justify.
Answers
Sodium is a metal that is stored in kerosene oil as it reacts very fast with air and water. Chlorine is a reactive greenish yellow gas which is poisonous. When these two elements combine chemically they form common salt sodium chloride which is non poisonous colourless solid substance that we use in our food to add taste and to obtain some nutritionSodium chloride is white crystalline while sodium grey solid metal and chlorine is gas. Sodium and chlorine give exothermic reactions with water while sodium chloride remains unreactive with water. 2 Na (s) + 2 H2O(l) →2 NaOH(aq) + H2(g) Cl2(g) + H2O(l) →HOCl(aq) + H+(aq) + Cl-(aq).
Answer:
Sodium is a metal that is stored in kerosene oil as it reacts very fast with air and water. Chlorine is a reactive greenish yellow gas which is poisonous. When these two elements combine chemically they form common salt sodium chloride which is non poisonous colourless solid substance that we use in our food to add taste and to obtain some nutritionSodium chloride is white crystalline while sodium grey solid metal and chlorine is gas. Sodium and chlorine give exothermic reactions with water while sodium chloride remains unreactive with water. 2 Na (s) + 2 H2O(l) →2 NaOH(aq) + H2(g) Cl2(g) + H2O(l) →HOCl(aq) + H+(aq) + Cl-(aq).
Explanation: