Explain the ''Corrosion'' terms with one example.
Explain the ''Corrosion'' terms with one example.
Corrosion:
Corrosion is defined as a process where materials, usually metals, deteriorate as a result of a chemical reaction with air, moisture, chemicals, etc.
For example, iron, in the presence of moisture, reacts with oxygen to form hydrated iron oxide.
$4Fe + 3{O_2} + n{H_2}O \to \mathop {2F{e_2}{O_3}.n{H_2}O}\limits_{Hydrated\,\,iron\,\,oxide} $
This hydrated iron oxide is rust.
Similar Questions
Identify the substances that are oxidised and the substances that are reduced in the following reactions.
$(i)$ $4 Na ( s )+ O _{2}( g ) \rightarrow 2 Na _{2} O ( s )$
$(ii)$ $CuO ( s )+ H _{2}( g ) \rightarrow Cu ( s )+ H _{2} O ( l )$
Identify the substances that are oxidised and the substances that are reduced in the following reactions.
$(i)$ $4 Na ( s )+ O _{2}( g ) \rightarrow 2 Na _{2} O ( s )$
$(ii)$ $CuO ( s )+ H _{2}( g ) \rightarrow Cu ( s )+ H _{2} O ( l )$
What is the difference between displacement and double displacement reactions ? Write equations for these reactions.
What is the difference between displacement and double displacement reactions ? Write equations for these reactions.
Why is respiration considered an exothermic reaction ? Explain.
Why is respiration considered an exothermic reaction ? Explain.
Write a balanced chemical equation with state symbols for the following reactions.
$(i)$ Solutions of barium chloride and sodium sulphate in water react to give insoluble barium sulphate and the solution of sodium chloride.
$(ii)$ Sodium hydroxide solution (in water) reacts with hydrochloric acid solution (in water) to produce sodium chloride solution and water.
Write a balanced chemical equation with state symbols for the following reactions.
$(i)$ Solutions of barium chloride and sodium sulphate in water react to give insoluble barium sulphate and the solution of sodium chloride.
$(ii)$ Sodium hydroxide solution (in water) reacts with hydrochloric acid solution (in water) to produce sodium chloride solution and water.
What do you mean by a precipitation reaction? Explain by giving examples.
What do you mean by a precipitation reaction? Explain by giving examples.