Question

write down chemical properties of metals
a) reactions with O2

b) reaction with H2O

c) reaction with acids

d) reaction with H2

e) reaction with other metal salts
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Answer 1

Answer:

a) Many metals produce metal oxide by burning in the oxygen of the air. Highly reactive metals react violently when they're burnt in oxygen. ... Metals produce metal oxide and hydrogen gas while reacting with water. Soluble metal oxides dissolve in water and create metal hydroxide.

b) In general the reactions of metals with water produce hydrogen gas (H 2 ) and the hydroxides of the metals. Metals with moderate to low reactivity react very slowly with water. However, they react moderately with steam when heated and give hydrogen gas and metal oxides.

c) Metals When a metal reacts with an acid, a salt and hydrogen gas are produced. ... Zinc reacts with sulphuric acid to form zinc sulphate and hydrogen gas. Magnesium reacts with sulphuric acid to form magnesium sulphate and hydrogen gas. Aluminium reacts with hydrochloric acid to form aluminium chloride and hydrogen gas.

d) Almost all metals and nonmetals react with hydrogen at high temperatures. ... For example, hydrogen gas and ferrous oxide react, yielding metallic iron and water, H2 + FeO → Fe + H2O; hydrogen gas reduces palladium chloride to form palladium metal and hydrogen chloride, H2 + PdCl2 → Pd + 2HCl.

e) Almost all metals and nonmetals react with hydrogen at high temperatures. ... For example, hydrogen gas and ferrous oxide react, yielding metallic iron and water, H2 + FeO → Fe + H2O; hydrogen gas reduces palladium chloride to form palladium metal and hydrogen chloride, H2 + PdCl2 → Pd + 2H

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