Chemical Reactions

Identify the double displacement reactions among the following: 1. KCl(aq) + AgNO3(aq) → AgCl(s) + KNO3(aq) 2. Na2SO4(aq) + BaCl2(aq) → BaSO4(s) + 2NaCl(aq) 3. H2SO4(aq) + 2NaOH(aq) → Na2SO4(aq) + 2H2O(l) 2 and 3 only 1 and 3 only 1 and 2 only All of 1, 2, and 3 None of 1, 2, and 3

All of 1, 2, and 3

Complete the reaction: HNO3(aq)+KHCO3(aq)→ _______

H2O(l)+CO2(g)+KNO3(aq)

KI(aq)+BaS(aq)→ Express your answer as a chemical equation. Enter noreaction if no precipitate is formed.

noreaction

NaC2H3O2(aq)+Pb(NO3)2(aq)→ Express your answer as a chemical equation. Enter noreaction if no precipitate is formed.

noreaction

Determine whether each of the following compounds is soluble. K3PO4 CuI2 CoCO3 AgCl Na2CO3 Pb(NO3)2 LiOH

K3PO4 CuI2 Na2CO3 Pb(NO3)2 LiOH

What are the coefficients for the following reaction when it is properly balanced? ___HCl + ___Mg → ___MgCl2 + ___H2

2, 1, 1, 1

What are the coefficients for the following reaction when it is properly balanced? ___Na3PO4 + ___Ba(NO3)2 → ___NaNO3 + ___Ba3(PO4)2

2, 3, 6, 1

HCl(aq)+Ba(OH)2(aq)→ Express your answer as a chemical equation. Identify all of the phases in your answer.

2HCl(aq)+Ba(OH)2(aq)→2H2O(l)+BaCl2(aq)

Which of the following reactions would be classified as oxidation-reduction? Check all that apply. 2Na(s)+Cl2(g)→2NaCl(s) Na(s)+CuCl(aq)→NaCl(aq)+Cu(s) NaCN(aq)+CuCl(aq)→NaCl(aq)+CuCN(s)

2Na(s)+Cl2(g)→2NaCl(s) Na(s)+CuCl(aq)→NaCl(aq)+Cu(s)

NaCl(aq)+Hg2(C2H3O2)2(aq)→ Express your answer as a chemical equation. Enter noreaction if no precipitate is formed.

2NaCl(aq)+Hg2(C2H3O2)2(aq)→2NaC2H3O2(aq)+Hg2Cl2(s)

How many oxygen atoms are on the reactant side of this chemical equation? K2CO3(aq)+Pb(NO3)2(aq)→2KNO3(aq)+PbCO3(s)

9 oxygen atoms

Which of the following is NOT evidence that a chemical reaction has occurred? A. color change when chemicals are contacted with each other B. solid formation when chemicals are contacted with each other C. gas formation when chemicals are contacted with each other D. emission of light when chemicals are contact with each other E. All of the above are evidence of a chemical reaction.

E. All of the above are evidence of a chemical reaction.

H2SO4(aq)+KOH(aq)→ Express your answer as a chemical equation. Identify all of the phases in your answer.

H2SO4(aq)+2KOH(aq)→2H2O(l)+K2SO4(aq)

HClO4(aq)+NaOH(aq)→ Express your answer as a chemical equation. Identify all of the phases in your answer.

HClO4(aq)+NaOH(aq)→H2O(l)+NaClO4(aq)

K2SO4(aq)+BaBr2(aq)→ Express your answer as a chemical equation. Enter noreaction if no precipitate is formed.

K2SO4(aq)+BaBr2(aq)→BaSO4(s)+2KBr(aq)

Write the balanced chemical equation for the neutralization reaction that occurs when an aqueous solution of hydrochloric acid (HCl) is mixed with an aqueous solution of potassium hydroxide (KOH). Indicate the physical states of the reactants and products using the abbreviations (s), (l), (g), or (aq) for solids, liquids, gases, or aqueous solutions, respectively.

KOH(aq)+HCl(aq)→KCl(aq)+H2O(l)

Classify the following unbalanced chemical reactions as neutralization or precipitation reactions. Mg(OH02(aq)+HCl(aq)→MgCl2(aq)+H2O(l) HBr(aq)+NaOH(aq)→NaBr(aq)+H2O(l) CH3COOH(aq)+KOH(aq)→CH2COOK(aq)+H2O(l) Pb(NO3)2(aq)+KI(aq)→PbI2(s)+KNO3(aq) AgNO3(aq)+NaCl(aq)→AgCl(s)+NaNO3(aq) BaCl2(aq)+Na2SO4(aq)→BaSO4(s)+NaCl(aq)

Neutralization: Mg(OH02(aq)+HCl(aq)→MgCl2(aq)+H2O(l) HBr(aq)+NaOH(aq)→NaBr(aq)+H2O(l) CH3COOH(aq)+KOH(aq)→CH2COOK(aq)+H2O(l) Precipitation: Pb(NO3)2(aq)+KI(aq)→PbI2(s)+KNO3(aq) AgNO3(aq)+NaCl(aq)→AgCl(s)+NaNO3(aq) BaCl2(aq)+Na2SO4(aq)→BaSO4(s)+NaCl(aq)

Determine whether each of the following compounds is insoluble. Ca(C2H3O2)2 PbBr2 Hg2Br2 Cu(OH)2 SrSO4 PbI2 CaCl2

PbBr2 Hg2Br2 Cu(OH)2 SrSO4 PbI2

Many chemical reactions can be classified according to what the atoms or groups of atoms do during the reaction. Classify the following reactions as synthesis, decomposition, single-displacement, or double-displacement reactions.

Synthesis: C6H12+Br2→C6H12Br2 8Ca+S8→8CaS Decomposition: 2NaCl→2Na+Cl2 CaCO3→CaO+CO2 2HI→H2+I2 Single-displacement: Mg+2HCl→MgCl2+H2 Double-displacement: AgNO3+NaCl→NaNO3+AgCl Na2CO3+2HCI→2NaCl+H2CO3

When the equation, ___O2 + ___C5H12 → ___CO2 + ___H2O is balanced, the coefficient of O2 is:

coefficient of O2 is -> 8