Question

Which of the following displacement reactions can occur?
)A) CuSO4 +Ag Cu +AgSO4
)B) 2Ba(NO3)2 + Zn 2Ba + Zn (NO3)2
)C) 2AgNO3 + Zn 2Ag + Zn(NO3) 2
)D) MgSO4 + Zn ZnSO4 + Mg
)E) 2NaNO3 + Zn 2Na + Zn(NO3) 2

Answer 1

C.

This is the only reaction where the reduction potential of the species present as an ion is greater than the species present in its reduced form.

Answer 2

Answer : Option C) $2AgNO_{3} + Zn ----> 2 Ag + Zn(NO_{3})_{2}$

Explanation : Displacement reaction are those chemical reactions in which a more reactive element is usually displaced with a less reactive element from its compound. Wherein both metals and non-metals take part in displacement reactions.

$2AgNO_{3} + Zn ----> 2 Ag + Zn(NO_{3})_{2}$ this reaction can occur because in the reactivity series zinc is found to be more reactive than silver, so it's comparatively easy for Zn to replace the Ag from its solution.