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Name________________ Hour____ Chapter 11 Review Chemical Equations and Reaction Types 1. Name/write the formula for the following chemicals. a. bromine gas c. Al2S3 e. plumbic oxide Br2 Aluminum Sulfide PbO2 b. dichromic acid d. P5O10 f. dicarbon tetroxide H2Cr2O7 Pentaphosphorous decaoxide C2O4 2. Write in Words: MnO FeSO4 (aq) + Ba(NO3)2 (aq) → g. I2 iodine gas h. HOH water Fe(NO3)2 (aq) + BaSO4 (s) 1 formula unit of aqueous iron(II) sulfate reacts with 1 formula unit of aqueous barium nitrate in the presence of magnesium(II) oxide catalyst to produce 1 formula unit of aqueous iron(II) nitrate and 1 formula unit of solid barium sulfate. 3. Write in Words: 2Al ( ) + 6HOH(l) à 3H2 ( ) + 2Al(OH)3 (s) ↓ ↑ 2 atoms of solid aluminum react with 6 molecules of liquid water to produce 3 molecules of hydrogen gas and 2 formula units of solid aluminum hydroxide. 4. Write in symbols: 2 formula units of solid lead (IV) oxide decomposes in the presence of heat to produce 2 formula units of solid lead (II) oxide and 1 molecule of oxygen gas. Δ 2PbO2(s) à 2PbO(s)+ O2(g) 5. Write in symbols: 1 molecule of hydrogen gas reacts with 1 molecule of chlorine gas using magnesium and heat as a catalyst to yield 2 formula units of hydrochloric acid solution. Δ/Mg H2(g) + Cl2(g) à 2HCl(aq) 6. Analyze the following unbalanced chemical equation: ____CO + ____O2 à ____CO2 a. Identify the product(s) Carbon dioxide h. List all of the coefficients in the reaction 2,1,2 b. What does the à mean? Produces, yeilds i. Name the compound on the product side c. Is a catalyst used? How do you know? Carbon dioxide No, it would be written above the arrow j. How many total atoms are reacting? 6 d. Name the element in the reaction. Oxygen k. How many total atoms are produced? 6 e. Name the compound on the reactant side. Carbon monoxide l. Which substances have double/triple g. List all of the subscripts in the reaction 2,2 bonds? All have double/triple bonds 7. What are the sneaky seven elements? List all formulas and explain why they are also known as “diatomic” elements. Hydrogen H2 Nitrogen N2 Oxygen O2 Fluorine F2 Chlorine Cl2 Diatomic because when they are alone they always exist in pairs. Bromine Br2 Iodine I2 8. For each of the following (1) name reaction type (2) determine products (3) balance REACTION TYPE a. 2KClO3 → 2KCl + b. 2NaCl + F2 c. 2H2 à Cl2 + O2 à 2H2O d. (NH4)2CrO4 + Na2SO4 e. 2C8H18 + 25O2 à f. 2Al2O3 g. 2Na h. Fe2(CO3)3 10. Write the following word equations as chemical equations and balance. Classify the reaction type. + à 2H2O à + 16CO2 2NaF SR-A (NH4)2SO4 + + 2NaOH 3H2SO4 à Fe2(SO4)3 + Decomposition Combination à 4Al 3O2 + Na2CrO4 18H20 Double Replacement Combustion 3O2 Decomposition + H2 SR-C + 3H2CO3 Double Replacement a. aluminum bromide + chlorine à aluminum chloride + bromine 2AlBr3 + 3Cl2 à AlCl3 + 3Br2 SR-A b. copper + sulfuric scid à copper (II) sulfate + hydrogen gas Cu H2SO4 à + CuSO4 + H2 SR-C 11. For each of the following possible reactions, write the products with states and then balance. If no reaction occurs, indicate and explain why. a. Al2(SO4)3 + b. Hg(NO3)2 à 3 Ca 3CaSO4 + 2Al + 2Ag à 2AgNO3 + Hg No reaction, Ag is not strong enough to replace Hg. Ag is lower on the reactivity series c. 2Fe (III) + 3CuCl2 à 3Cu + 2FeCl3 d. 2KBr + I2 à 2 KI + Br2 No reaction, iodine is not strong enough to replace bromine. e. H2SO4 + 2NaOH à 2HOH + Na2SO4 f. (NH4)3PO4 + 3KNO3 à 3NH4NO3 + K3PO4 13. Define the Law of Conservation of Mass and be able to apply it to balanced chemical equations. Mass cannot be created or destroyed. In a balanced chemical equation you need to start and end with the same number of atoms of each element. Name________________ Hour____ Chapter 11 Review Chemical Equations and Reaction Types 14. Know how to use the splint test. What are the 3 gases that the splint test can identify and which observations identify each one? H2 CO2 O2 = = = Splint “pops” Splint goes out Splint flame stays lit or gets bigger 15. What must happen in order for a double replacement reaction to take place? A gas, solid, or water must form 16. Predict the reactants using words and write a balanced chemical equation. a. methanol (CH3OH) + oxygen à carbon dioxide + water b. Copper(I) + oxygen à cuprous oxide c. Sodium carbonate + hydrochloric acid à carbonic acid + sodium chloride d. Alumnium + water à aluminum hydroxide + hydrogen e. Barium chloride à barium + chlorine