Subject :NSO Class : Class 8
Which of the following reactions cannot take place?
A Zinc + Sulphuric acid (dilute) → Zinc sulphate + Hydrogen
B Copper + Silver nitrate → Copper nitrate + Silver
C Zinc + Iron sulphate → Zinc sulphate + Iron
D Copper + Hydrochloric acid (dilute) →Copper chloride + Hydrogen
why
Ans 1:
Class : Class 6
correct answer is D because in the reactivity series,copper lies below hydrogen which means that hydrogen cannot be displaced by copper from its salt solution.
Ans 2:
Class : Class 8
The correct option is D.
Because if you see the reactivity table copper is placed below hydrogen.So it is not more reactive than hydrogen and cannot replace it from its compound.