Question

Which of the following are single-displacement reactions?
~There can be more then one answer~

A. Zn (s) + H2SO4 (aq) → ZnSO4 (aq) + H2 (g)
B. 2Al (s) + 3CuCl2 (aq) → 2AlCl3 (aq) + 3Cu (s)
C. AgNO3 (aq) + NaCl (aq) → AgCl (s) + NaNO3 (aq)
D. 2Fe(s) + 6HCI (g) → 2FeCl3 (s) + 3H2 (g)

Answer 1

To determine if it is single-replacement, look for a metal and a compound on the reactant side and then the metal attached to in a compound on the product side.

So here A, B, and D would be considered single-replacement

Answer 2

Answer: The correct option are(A),(B) and (D).

Explanation:

Single Displacement reaction is define as chemical reaction in which more reactive element displaces the less reactive element from its compound. It is generally given as:

$AB+C\rightarrow A+BC$

Reactions in option (A) and (B) represents single displacement reaction.:

$Zn(s)+H_2SO_4(aq)\rightarrow ZnSO_4(aq)+H_2(g)$

$2Al(s)+3CuCl_2(aq)\rightarrow 2AlCl_3(aq)+3Cu(s)$

$2Fe(s)+6HCl(aq)\rightarrow 2FeCl_3(s)+3H_2(g)$

Hence, the correct option are(A) ,(B)and (D).