Predicting Products – Look at the following reactions and do the following:

1) Identify the reaction as C, S, D, SD, DD, or AB

2) If it is a S or D, identify it as:

a. hydroxide

b. carbonate

c. chlorate

d. binary

e. acid

3) After you have identified the reactions, predict the products. I suggest that you predict the

products of all of one type of reaction and then move on to a different type of reaction (i.e. all

the synthesis, then all the single displacements, etc.). I would make sure that I did the

decompositions before the syntheses.

4) Determine whether the products are aqueous or precipitates by using the solubility rules.

5) For the single displacement reactions, use the activity series to determine if they would

actually occur.

1. Rxn Type

SrCl2 + Cs2CO3

2. Rxn Type

Mg + NiCl2

3. Rxn Type

C6H14 + O2

4. Rxn Type

NaCl + O2

5. Rxn Type

HCl + NaOH

6. Rxn Type

KClO3

7. Rxn Type

K2CO3

8. Rxn Type

H2SO4 + Ba(OH)2

9. Rxn Type

Zn + CuCl2

10. Rxn Type

Na3PO4 + MgCl2

11. Rxn Type

NaOH

12. Rxn Type

Cu + O2

Assume Cu+1

13. Rxn Type

BaO + H2O

14. Rxn Type

g

C3H8 + O2

15. Rxn Type

Cs2O + CO2

16. Rxn Type

FeCl3

17. Rxn Type

Na2S + CuCl

18. Rxn Type

H2SO4 + Ca(OH)2

19. Rxn Type

SbCl3 + Fe

Assume Fe+2

20. Rxn Type

AlCl3 + H2SO4

21. Rxn Type

HNO3

Writing Chemical equations …More practice

Directions: Classify each reaction, use solubility chart and activity series to predict if reaction

will occur

_________1) Aqueous aluminum nitrate is reacted with a piece of magnesium

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________2) Solid potassium chlorate is decomposed

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_______3) Aqueous solutions of sulfuric acid and magnesium hydroxide react

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______4) a piece of Iron reacts with oxygen gas (assume ferric in product)

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_____5) Solid nickel II carbonate decomposes

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______6) Aqueous magnesium bromide is reacted with bromine gas

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______7) Solid calcium oxide and carbon dioxide react

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______8) butane gas (C4H10) is combusted (don’t forget oxygen is a reactant!)

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______9) Solid calcium chlorate decomposes

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______10) Aqueous solutions of sodium phosphate and lead II nitrate react

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_____11) Solid strontium chloride reacts with oxygen gas to form a solid product

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_____ 12) A piece of aluminum is placed in a solution of lithium chloride

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Identify the reaction type, predict the products, and balance the equations. If it is a special

decomposition or synthesis, identify which kind.

1. calcium + oxygen →

2. cupric carbonate →

3. aluminum + hydrochloric acid →

4. potassium iodide + chlorine →

5. barium chloride + sodium sulfate →

6. copper + silver nitrate → cupric nitrate

7. barium hydroxide + sulfuric acid →

8. zinc sulfate + ammonium sulfide →

9. sodium + water →

10. magnesium + sulfuric acid →

Chemical Equations

1. The actual knowledge about what products are produced in a chemical reaction is

obtained by

a. inspecting the chemical equation

b. balancing the chemical equation

c. laboratory analysis

d. writing a word equation

2. Once the correct formula for a reactant in an equation has been written, the

a. subscripts are adjusted to balance the equation

b. formula should not be changed

c. same formula must appear as a product

d. symbols used in the formula must not be used on the product side of the equation

3. In writing an equation in which hydrogen gas appears as a product, the correct

representation of hydrogen gas is

a. H

b. 2 H

c. H2

d. OH

4. In a chemical equation, the symbol “→” is read

a. aqueous

b. goes

c. yields

d. points

5. In a chemical equation, the symbol “↑” is used for a(n)

a. heated reactant

b. gaseous reactant

c. catalyst

d. gaseous product

6. How would oxygen be represented in the formula equation for the reaction between

methane (CH4) and oxygen to yield carbon dioxide and water?

a. oxygen

b. O

c. O2

d. O3

7. What is the ratio of hydrogen to chlorine in the equation H2(g) + Cl2(g) → 2 HCl(g)?

a. 1:2

b. 2:1

c. 1:1

d. 4:2

8. Balanced formula equations express all of the following EXCEPT

a. experimentally established facts

b. mechanisms by which reactants become restructured into products

c. identities of reactants and products in a chemical system

d. relative quantities of reactants and products in the system

9. A reversible reaction is indicated by

a. a capital R

b. a lower-case r

c. an up and down arrow

d. two yield symbols pointing in opposite directions

10. When the equation Fe3O4 + Al → Al2O3 + Fe is correctly balanced, the coefficient of Fe

is

a. 3

b. 4

c. 6

d. 9

11. In a chemical equation, the symbol “(s)” indicated that the substance is a(n)

__________________________.

Activity Series of the Elements

1. The ability of an element to react is referred to as an element’s

a. valence

b. activity

c. stability

d. electronegativity

2. An element in the activity series can replace any element

a. in the periodic table

b. below it on the list

c. above it on the list

d. in its group

3. An activity series is useful because it allows a person to predict

a. whether or not a certain chemical reaction will occur

b. the amount of energy released by a chemical reaction

c. the electronegativity values of elements

d. the melting points of elements

4. For a single replacement reaction, an element will replace from a compound in aqueous

solution those elements

a. above it in the activity series

b. with lower atomic masses

c. below it in the activity series

d. with higher atomic masses

5. To replace hydrogen fromsteam, a metal must be

a. above cobalt in the activity series

b. below hydrogen in the activity series

c. a halogen

d. less reactive than lithium

6. In the activity series, any metal above hydrogen reacts with acids, replacing

a. hydrogen

b. oxygen

c. chlorine

d. water

7. The synthesis of oxides by reaction with oxygen occurs for any metal in the activity series

a. below platinum

b. above gold

c. above silver

d. below tin

8. Oxides are formed only indirectly by metals in the activity series

a. above zinc

b. below calcium

c. above tin

d. below mercury

9. In the presence of oxygen, O2, gold can be expected to

a. rapidly form an oxide

b. slowly form an oxide

c. not react

d. rapidly form a metallic hydroxide

10. In the activity series, oxides of metals below copper

a. do not exist

b. do not decompose

c. decompose with heat alone

d. are acidic

11. In the activity series, oxides o f metals below chromium yield metals when

a. heated with hydrogen

b. cooled below 0 oC

c. combined with oxygen

d. added to acids

12. Since mercury is below copper in the activity series, heating HgO will result in

a. no reaction

b. the formation of a hydroxide

c. the formation of Hg2O

d. decomposition

13. Predict what will happen when calcium metal is added to a solution of magnesium chloride.

a. No reaction will occur

b. calcium chloride will form

c. magnesium calcite will form

d. gaseous calcium will be produced

14. Predict what will happen when zinc is added to water.

a. no reaction will occur

b. steam will be produced

c. zinc oxide will form

d. hydrogen will be released

15. Predict what will happen when lead is added to nitric acid.

a. no reaction will occur

b. oxygen will be released

c. lead oxide will form

d. hydrogen will be release