I believe #3 is wrong. The others are ok.
C is a combustion reaction. D is the double displacement.
Which of the following is an example of a double-displacement reaction?
AlCl3 + 3 NaOH → Al(OH)3 + 3 NaCl
Na2O + H2O → 2 NaOH
CuCO3 → CuO + CO2
None of the above are examples of double-displacement.
A
Which of the following is a double-displacement reaction?
2 KClO3 → 2 KCl + 3 O2
Zn + 2 HCl → ZnCl2 + H2
Fe + S → FeS
None of the above are examples of double-displacement.
D
Which of the following is a double-displacement reaction?
4P + 5O2 2P2O5
6NaNO3 6NaNO2 + 3O2
2C8H18 + 25O2 16CO2 + 18H2O
H2SO4 + 2NaOH Na2SO4 + 2H2O
C
What would most likely be the products of the double-displacement reaction between AgNO3 and NaCl ?
Ag + NaNO3
AgCl + Na
AgCl + NaNO3
The reaction would not occur because Al is lower on the activity series than Na.
C
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