What happens when sodium , magnesium, iron and copper reacts with water
Answers
Answer:
sodium + water = colourless solution is formed, consisting of strongly alkalic sodium hydroxide (caustic soda) and hydrogen gas. This is an exothermic reaction. Sodium metal is heated and may ignite and burn with a characteristic orange flame.
magnesium + water = Magnesium burns in steam to produce white magnesium oxide and hydrogen gas. Very clean magnesium ribbon has a very slight reaction with cold water.
iron + water = The iron reacts with water and oxygen to form hydrated iron(III) oxide, which we see as rust. Iron and steel rust when they come into contact with water and oxygen – both are needed for rusting to occur.
copper +water = Copper does not react with water, but it does slowly react with atmospheric oxygen to form a layer of brown-black copper oxide which, unlike the rust that forms on iron in moist air, protects the underlying metal from further corrosion (passivation).
Explanation:
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Answer:
sodium reacts with water to form sodium hydroxide and hydrogen gas.
magnesium react with steam to form magnesium oxide and hydrogen gas.
iron reacts with water to form hydrated iron which is known as rust.
copper reacts with water slowly to form copper oxide and hydrogen gas..