chapter 8 chem test
in this reaction, what is the coefficient for calcium oxide? ? CaO + CO2 -> CaCO3
1
which of the following correctly gives the best coefficients for the reaction below? __N2H4 (g) + __H2O2 (g) -> __N2 (g) + __H2O (g)
1,2,1,4
when barium chloride allowed to react with silver nitrate to give barium and silver chloride, what are the coefficients for the balanced equation? __ BaCl2 (aq) + __ AgNO3 (aq) -> __ AgCl (s) + Ba(NO3)2 (aq)
1,2,2,1
what are the coefficients for the balanced equation? __Al2(SO4)3 (aq) + __KOH (aq) -> __Al(OH)3 (s) + __K2SO4 (aq)
1,6,2,3
in the following reaction, what is the correct coefficient for aluminum chloride? Al + Cl2 -> ?AlCl3
2
in this reaction, what is the correct coefficient for sodium chloride? Pb(NO3)2 + ? NaCl -> PbCl2 + ? NaNO3
2
which of the following gives the balanced equation for this reaction? K3PO4(aq) + Ca(NO3)2(aq) -> Ca3(PO4)2 + KNO3(aq)
2K3PO4 + 3Ca(NO3)2 -> Ca3(PO4)2 + KNO3
for the following reaction, what is the correct coefficient for the H2? Fe + HCl -> FeCl3 + ?H2
3
what is the coefficient of hydrogen, H2, when the following equation is balanced? Al + H2SO4 -> Al2(SO4)3 + ? H2
3
what is the coefficient for carbon dioxide in the balanced equation? C5H12 + O2 --> CO2 + H2O
5
what is the coefficient for water in the balanced equation? C5H12 + O2 --> CO2 + H2O
6
What coefficient is placed in front of O2 to complete the balancing of the following equation? C5H8 + ? O2 → 5CO2 + 4H2O
7
what is the coefficient for oxygen in the balanced equation? C5H12 + O2 --> CO2 + H2O
8
Name the product(s) of the complete combustion of any hydrocarbon.
CO2 + H2O
which of the following is a combination reaction?
N2 +O2 -> 2NO
which products would result from the double replacement reaction between MgCl2 and Na2CO3?
NaCl and MgCO3
When lead (II) nitrate reacts with sodium iodide, what is the correct formula for the product lead(II) iodide?
PbI2
in this set of chemical reactions, which is a single replacement reaction?
Zn + H2SO4 -> ZnSO4 + H2
in a ____ reaction, two or more elements or compounds form one product
combination
the reaction of carbon dioxide with oxygen to produce carbon monoxide is an example of which class of reaction? 2C + O2 -> 2CO
combination
what is the classification for this reaction? SO3 + H2O -> ZnSO4 +H2
combination
The reaction of butane with oxygen is called
combustion
the following reaction is an example of a ____ reaction. 2C2H6 + 7O2 -> 4CO2 + 6H2O
combustion
in the reaction of silver nitrate solution, which is colorless, which copper metal, metallic silver comes out of solution, and the solution turns blue. The blue of the new solution must bed due to ______.
copper nitrate
the following reaction takes place when an electric current is passed through water. It is an example of a _____ reaction. 2H2O -> 2H2 + O2
decomposition
the reaction of carbon dioxide to form carbon monoxide and oxygen is what type of raeaction? 2CO2 -> 2CO + O2
decomposition
silver nitrate reacts with potassium chloride to produce solid silver chloride and what substance?
potassium nitrate
what is the classification for this unbalanced reaction? Fe + HCl -> FeCl3 + H2
single replacement
a chemical equation is balanced when
the number of atoms of each element is the same in reactants and products
In any balanced chemical equation, the number of each type of atom on both sides of the equation is
the same