Question

Mohit was doing experiment with iron nail and copper sulphate solution in his school
laboratory. He placed iron nail in a test tube containing copper sulphate solution.
After 15 minutes he took out nail from solution and noted down various
observations.
Now answer the following questions:
A. Was there any change in colour of solution?
B. Was there any brown colour shining on iron nail?
C. Was it a physical or chemical change?
D. Which type of chemical reaction is shown by this activity?
E. Write down chemical reaction involved in activity​

Answer 1

Answer:

a.yes there was

b.yes there was which was rust

c.since rust is  a new substance formed its a chemical change

d.Rusting is an oxidation reaction. The iron reacts with water and oxygen to form hydrated iron(III) oxide, which we see as rust.

e.Fe2O3•32H2O

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