WorksheetsReaction Type Review-Combustion, Single & Double Replacement
Total questions: 15
Worksheet time: 12mins
For the equation Na + Cl2 --> NaCl, what are the coefficients for each of the elements/compounds?
2, 2, 1
2, 1, 2
1, 1, 1
1, 1, 2
For the equation Mg + I --> MgI2, there is an error here. What is that error?
There should be a subscript 2 behind the Mg on the left.
There should be a subscript 2 behind the I on the left.
There should be a coefficient 2 in front of the Mg on the left side.
There should be a coefficient 2 in front of the I on the left side.
For complete combustion reactions, there are only two products. What are those two products?
hydrocarbon and O2
CO2 and H2O
Depends on if the metal is above the other metal on the Activity Series of Metals
Depends on if one of the products is a solid or if both products are aqueous.
You should write a triangle over the arrow on these types of equations:
single replacement
double replacement
combustion
This is a combustion equation; please complete and balance it:
C3H8 + O2 -->
C3H8 + O2 --> CO2 + H2O
C3H8 + 5O2 --> 3CO2 + 4H2O
C3H8 + O2 --> C3H8O2
2C3H8 + 2O2 --> 6CO2 + 8H2O
Single replacement reaction--finish and balance:
K + Li2O -->
K + Li2O --> K2O + Li
2K + Li2O --> K2O + 2Li
K + Li2O --> KO + 2Li
K + Li2O --> No reaction
Single replacement-- finish and balance:
Mg + H2O -->
Mg + H2O --> MgO + H2
2Mg + H2O --> 2MgO + H2
Mg + H2O --> MgH2O
Mg + H2O --> NR
Single replacement -- finish and balance:
Mg + HCl -->
Mg + HCl --> MgH + Cl2
Mg + HCl --> MgHCl
Mg + HCl --> MgCl + H
Mg + 2HCl --> MgCl2 + H2
Single replacement -- finish and balance:
F2 + NaCl -->
F2 + NaCl --> Na + FCl
F2 + NaCl --> NaF + Cl
F2 + 2NaCl --> 2NaF + Cl2
F2 + NaCl --> no reaction
Single replacement -- finish and balance:
Br2 + NaF -->
Br2 + 2NaF --> 2NaBr + F2
Br2 + 2NaF --> 2Na + 2BrF
Br2 + NaF --> NaFBr
Br2 + NaF --> no reaction
Double replacement -- finish and balance:
HCl + AgNO3 -->
HCl + AgNO3 --> HAg + ClNO3
HCl + AgNO3 --> HNO3 + AgCl
HCl + AgNO3 --> no reaction (both products are aqueous)
In the double replacement reaction
AgNO3 + NaBr --> NaNO3 + AgBr
which one of the products is a solid?
NaNO3
AgBr
Double replacement -- finish and balance:
Lithium chloride combines with zinc (II) phosphate -->
LiCl + ZnPO4 --> LiPO4 + ZnCl
LiCl + Zn3(PO4)2 --> Li3PO4 + ZnCl2
6LiCl + Zn3(PO4)2 --> 2Li3PO4 + 3ZnCl2
LiCl + Zn3(PO4)2 --> no reaction (both products are aqueous)
The sentence states that the reaction takes place in the presence of the catalyst Platinum. How would you show that in the equation?
You don't need to show it.
You would write Pt on both the reactant side and the product side, and balance it.
You would write the word "cat" (for catalyst) above the arrow.
You would write the symbol Pt (for Platinum) above the arrow.
If you have an "INCOMPLETE" combustion reaction, one of the products that can form is dangerous...life threatening, even! What product is that?
water
carbon dioxide
carbon (soot)
carbon monoxide
