Question

Pls tell one equation of change in colour​

Answer 1

Reactions in which colour change occurs -

1) Blue to green

CuSO4 + Fe --> FeSO4 + Cu

2) Green to colourless -

Fe(OH)2 + Zn --> Zn(OH)2 + Fe

3) Colorless to blue -

Al2(SO4)3 + Cu --> CuSO4 + Al

4) Green to colourless -

Fe(OH)3 + Al --> Al(OH)3 + Fe