Chapter 7 Test Review
The net ionic equation contains which of the following species (when balanced in standard form)?
2Na (aq)
The complete ionic equation contains which of the following species (when balanced in standard form)?
2S (aq)
The scientist who discovered the essential nature of acids through solution conductivity studies is ____.
Arrhenius
Write the molecular equation for the following reaction: Aqueous solutions of potassium sulfate and barium chloride are mixed to form solid barium sulfate and aqueous potassium chloride.
K2SO4(aq) + BaCl2(aq) = BaSO4(s) + 2KCl(aq)
A substance that, when dissolved in water, produces a solution that conducts electric current very efficiently is called ____.
a strong electrolyte
HC2H3O2(aq) + CsOH(aq) = H2O(l) + CsC2H3O2(aq)
acid-base
HNO3(aq) + NaOH(aq) = H2O(l) + NaNO3(aq)
acid-base
H2SO4(aq) + Ba(OH)2(aq) = 2H2O(l) + BaSO4(s)
acid-base and precipitation
The _____ equation contains only those substances directly involved in reactions in aqueous solutions.
net ionic
The equation 2Al (s) + 2Br2 (l) = 2AlBr3 (s) is a(n) ____ reaction.
oxidation-reduction and synthesis
C(s) + O2(g) = CO2(g)
oxidation-reduction, combustion, and synthesis
Which of the following is a salt?
MgCl2
In what type of reaction is water always a product?
acid-base
How many electrons are transferred in the following oxidation-reduction reaction? Zn (s) + 2AgNO3 (aq) = Zn(NO3)2 (aq) + 2Aq (s)
2
Write the complete ionic equation for the following reaction: Aqueous solutions of potassium sulfate and barium chloride are mixed to form solid barium sulfate and aqueous potassium chloride.
2K(aq) + SO4(aq) + Ba(aq) + 2Cl(aq) = BaSO4(s) + 2K(aq) + 2Cl(aq)
How many of the following are oxidation-reduction reactions? 1. reaction of a metal with a nonmetal 2. synthesis 3. combustion 4. precipitation 5. decomposition
4
When the following equation is balanced what is the coefficient for H2O? Ca(OH)2 (aq) + H3PO4 (aq) = Ca3(PO4)2 (s) +H2O (l)
6
CH4 (g) +2O2 (g) =CO2 (g) + 2H2O (g)
combustion and oxidation-reduction reaction
The reaction 2K (s) + Br2 (l) = 2KBr (s) is a(n) _____ reaction.
oxidation-reduction
Zr(s) + O2(g) = ZrO2(s)
oxidation-reduction
4NH3(g) + 5O2(g) = 4NO(g) + 6H2O(g)
oxidation-reduction and combustion
The reaction AgNO3 (aq) + NaCl (aq) = AgCl (s) + NaNO3 (aq)is a(n) _____ reaction.
precipitation
When an acid reacts with a base, which product always forms?
water
The molecular equation contains which of the following terms (when balanced in standard form)?
Na2S (aq)
The net ionic reaction for the reaction between aqueous lead nitrate and aqueous potassium iodide is _____.
Pb (aq) + 2I = PbI2
What is the correct balanced complete ionic equation for the reaction of lead(II) nitrate with potassium chloride?
Pb (aq) +2NO3 (aq) + 2K (aq) +2Cl (aq) = PbCl2 (s) + 2K (aq) + 2NO3 (aq)
The most common factors that cause chemical reactions to occur are all the following except ____.
a decrease in temperature
The reaction HCL (aq) + KOH (aq) = H2O (l) + KCl (aq) is a(n) ____ reaction.
acid-base
2HCl(aq) + Pb(OH)2(aq) = PbCl2(s) + 2H2O(l)
acid-base and precipitation
When a precipitation reaction occurs, the ions that do not form the precipitate ____.
are left dissolved in the solution
When a metal and a nonmetal react, the metal ___ electrons and the nonmetal ___ electrons.
gives; gains
A reaction that involves a transfer of electrons is called a(n) ____ reaction.
oxidation-reduction
Ca(s) + H2(g) = CaH2(s)
oxidation-reduction
Hg(l) + O2(g) = 2HgO(s)
oxidation-reduction
C3H8(g) + 5O2(g) = 3CO2(g) + 4H2O(g)
oxidation-reduction and combustion
2GaN(s) = 2Ga(s) + N2(g)
oxidation-reduction and decomposition
2H2O(l) = 2H2(g) + O2(g)
oxidation-reduction and decomposition
2HgO(s) = 2Hg(l) + O2(g)
oxidation-reduction and decomposition
2Cs(s) + F2(g) = 2CsF(s)
oxidation-reduction and synthesis
2Na(s) + H2(g) = 2NaH(s)
oxidation-reduction and synthesis
P4(s) + 5O2(g) = P4O10(s)
oxidation-reduction, combustion, and synthesis
S8(s) + 12O2(g) = 8SO3(g)
oxidation-reduction, combustion, and synthesis
Classify the following reaction: 2Mg (s) + O2 (g) = 2MgO (s)
oxidation-reduction, combustion, and synthesis reaction
KBr(aq) + AgNO3(aq) = AgBr(s) + KNO3(aq)
precipitation
ZnBr2(aq) + 2AgNO3(aq) = Zn(NO3)2(aq) + 2AgBr(s)
precipitation
Write the net ionic equation for the following reaction: Aqueous solutions of potassium sulfate and barium chloride are mixed to form solid barium sulfate and aqueous potassium chloride.
Ba(aq) + SO4(aq) = BaSO4(s)
