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)