Question

Which of the following is a double replacement reaction?

a. 2SO2 + O2 —> 2S03
b. Zn + Cu(NO3)2 → Zn(NO3)2 + Cu
c. 2H2O2–> 2H2O + O2
d . AgNO3 + NaCl → AgCl + NaNO3

Answer 1

The answer to your question is: letter D.

Step-by-step explanation:

Double replacement reaction is when the cation of one reactant replaces the metal of the other reactant and vice versa.

a. 2SO2 + O2 —> 2S03 This is a combination reaction

b. Zn + Cu(NO3)2 → Zn(NO3)2 + Cu This is a single replacement reaction.

c. 2H2O2–> 2H2O + O2 This is a decomposition reaction

d . AgNO3 + NaCl → AgCl + NaNO3 This is a double replacement reaction