difference in reaction of metal with steam and reaction of metal with water
Answers
metal oxide is formed in steam
Answer:
REACTION OF METALS WITH WATER AND STEAM –
➸ The reaction of metals with water results in the formation of metal hydroxide along with hydrogen gas.
➸ The reaction of metals with steam results in the formation of metal oxide along with hydrogen gas.
➸ The sodium and potassium reacts vigorously with cold water to form metal hydroxide and hydrogen gas.
➸ 2Na + H2O —> 2NaOH + H2 + Heat
➸ Calcium react with cold water to form calcium hydroxide and hydrogen gas.
➸ The heat produced in the reaction is very less which is not sufficient to burn the hydrogen gas formed.
➸ Ca + 2H2O —> Ca(OH)2 + H2.
➸ Magnesium doesn't react with cold water but it reacts with hot water to form magnesium hydroxide and hydrogen gas.
➸ Mg + H2O —> Ng(OH)2 + H2.
➸ Magnesium react very rapidly with steam to form magnesium oxide along with hydrogen gas.
➸ Mg + H2O (steam) —> MgO + H2.
➸ Metals like aluminium, iron and zinc doesn't react with other cold or hot water but it only reacts with steam.
➸ Al + H2O (steam) —> Al2O3 + H2.
➸ Zn + H2O (steam) —> ZnO + H2.
➸ Fe + H2O (steam) —> Fe2O4 + H2.
➸ The metals like copper, lead, silver and gold do not react with water as well as steam.