Answer :
Answer: [tex]2HF(aq)+Cl_2(g)\rightarrow F_2(g)+2HCl(aq)[/tex] will not occur.
Explanation:
A single replacement reaction is one in which a more reactive element displaces a less reactive element from its salt solution. Thus one element should be different from another element.
A general single displacement reaction can be represented as :
[tex]X+YZ\rightarrow XZ+Y[/tex]
a) [tex]2HF(aq)+Cl_2(g)\rightarrow F_2(g)+2HCl(aq)[/tex]
Flourine is more reactive than chlorine and hence this reaction cannot occur.
b) [tex]2Na(s)+ZnF_2(aq)\rightarrow 2NaF(aq)+Zn(s)[/tex]
Sodium is more reactive than zinc and hence the reaction will occur.
c) [tex]Fe(s)+CuCl_2(aq)\rightarrow FeCl_2(aq)+Cu(s)[/tex]
Iron is more reactive than copper and hence the reaction will occur.
d) [tex]2HCl(aq)+Mg(s)\rightarrow MgCl_2(aq)+H_2(g)[/tex]
Magnesium is more reactive than hydrogen and hence the reaction will occur.