C.2AgNO3 + Zn -> 2Ag + Zn(NO3) 2 is the answer.
single-displacement reaction, also called single-replacement
reaction, is a type of oxidation-reduction chemical reaction when an element or ion moves out of
one compound and into another -that is, one element is replaced by another in a compound. This is represented by the general reaction scheme:
A + BC → AC + B
This will most often occur if A is more reactive than B.
In the activity or reactivity series, the metals with the highest propensity to donate their electrons to react are listed first,
and the most unreactive metals are listed last. Therefore a metal higher
on the list is able to displace anything on the list below it. The order of activity for metals, from
most reactive to least reactive, is
Li,K,Sr,Ca,Na,Mg,Al,Zn,Cr,Fe,Cd,Co,Ni,... Similarly, the halogens with the highest propensity to acquire
electrons are the most reactive.
The activity series for halogens, from highest to lowest, is F, Cl, Br, I.
AgNO3 (which contains an Ag+ ion), and zinc, Zn, forms silver, Ag, and
zinc nitrate, Zn(NO3)2 (which contains a Zn2+ ion).
2AgNO3(aq) + Zn(s) → 2Ag(s) +Zn(NO3)2(aq).
Note that if the reactant in
elemental form is not the more reactive metal, then no reaction will occur. Some examples of this would be the reverse reactions to these:
Ag + Cu(NO3)2 → No reaction
Au + HCl → No reaction
