Question

Give 5 examples of chemical equations showing colour change

Answer 1

1.burning of cuso4
cuso4.10h2o(blue)--heat--->cuso4(white)

2.displacement reaction between iron nail and cuso4 solution
fe + cuso4 (blue) -----> feso4 (pale green)+ cu

3. dissociation of any base in a solution of phenolphthaline.