Question

a clean iron nail was placed in a test tube containing copper surphate solution . after 2 - 3 days it was obseved that the color of the solution changed from blue to green
a) why did the colour of the solution change?
b)Write the word equation for the chemical reaction that has taken place in the test tube
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Answer 1

Answer:

write the word equation

Answer 2

Answer:

a) When an iron nail immersed in the solution of copper sulphate than iron displaces copper from the solution of copper sulphate because iron is more reactive than copper. Therefore copper sulphate solution colour changes from blue to pale green.

b) Fe (s) + Cu2 + (aq) —→ Fe2+ (aq) + Cu (s). 1.