Chemistry - Chemical Reactions Review

Types of Equations

100

What type of equation is this?

SnF_4(s) --Δ -> Sn_(s) + 2F_2(g)

Decomposition

200

What type of equation is this?

Hf + 2N₂ ---> Hf₃N₄

Combination/Synthesis

300

Which equation type always yield CO₂ and H₂O as products?

Combustion

400

In order for a double replacement reaction to occur, one of three things must happen. What are these things?

1. A precipitate forms

2. A gas forms

3. A molecular compound (all non-metals) forms

500

Yeah this isn't supposed to be in the type of equations category I'm just tired and it's 3 in the morning and I can't come up with anything else to put here so I'm just gonna give you a different question :)

Complete and balance these equations:

1. C₂H₅OH_(l) + O_2(g) ---> ?

2. C₃H₈O_(l) + O_2(g) ---> ?

1. C₂H₅OH_(l) + 3O_2(g) ---> 2CO₂ + 3H₂O

2. C₃H₈O_(l) + 9O_2(g) ---> 6CO₂ + 8H₂O

Special Cases

100

What are the products and reactants for combination special cases?

Non-Metal Oxide + H₂O ---> Acid

Metal Oxide + H₂O ---> Base

200

What are the reactants and products for the decomposition special cases?

XCO₃ ---> XO + CO₂   

(Carbonate yields oxide and CO₂)

XHCO₃ ---> XO + CO₂ + H₂O 

(Bicarbonate yields oxide, CO₂, and H₂O)

300

Identify the type of reaction, complete, and balance the equations:

1. CO_2(g) + H₂O_(l) ---> ?

2. Na₂O_(s) + H₂O_(l) ---> ?

Combination

1. CO_2(g) + H₂O_(l) ---> H₂CO_3(aq)

2. CaO_(s) + H₂O_(l) ---> 2NaOH_(aq)

400

What are the reactants and products for double replacement special cases?

Acid + XCO₃ ---> Ionic Cmpd + CO₂ + H₂O

OR

Acid + XHCO₃ ---> Ionic Cmpd + CO₂ + H₂O

500

Identify the type of reaction, complete, and balance the equations:

H₂SO_4(aq) + NaHCO_3(s) ---> ?

Double Replacement

H₂SO_4(aq) + 2NaHCO_3(s) ---> Na₂SO₄ + 2CO₂ + 2H₂O

Balancing

100

How many oxygen atoms are there?

4Pb(SO₄)₂

32

200

Balance this equation:

H₂ + O₂ ---> H₂O

2H₂ + O₂ ---> 2H₂O

300

Are the following equations balanced? If not, balance them correctly.

1. 2C₄H₁₀ + 6O₂ ---> 4CO₂ + 2H₂O

2. C₈H₁₆ + 12O₂ ---> 8CO₂ + 8H₂O

3. 2BiSe + 2O₂ ---> 2BiO + 2SeO₂

1. Incorrect: 2C₄H₁₀ + 13O₂ ---> 8CO₂ + 10H₂O

2. Correct

3. Incorrect: 2BiSe + 3O₂ ---> 2BiO + 2SeO₂

400

Balance this equation:

FeCl₃ + AgNO₃ → Fe(NO₃)₃ + AgCl

FeCl₃ + 3AgNO₃ → Fe(NO₃)₃ + 3AgCl

500

Balance this equation:

C₅H₁₀O + O₂ ---> CO₂ + H₂O

C₅H₁₀O + 7O₂ ---> 5CO₂ + 5H₂O

Finish the Reaction

100

Complete and balance this equation:

H₂O_(l) + SO_3(g) ---> ?

H₂O_(l) + SO_3(g) ---> H₂SO_4(aq)

200

Complete and balance this equation:

CuCl_(s) ---> ?

2CuCl_(s) ---> 2Cu_(s) + Cl_2(g)

300

Complete and balance this equation:

LiBr_(aq) + Sn_(s) ---> ?

LiBr_(aq) + Sn_(s) ---> NR

Tin is lower than lithium on the activity series chart, therefore the reaction does not occur.

400

Complete and balance this equation:

Fe₂(CO₃)_3(s) ---> ?

Fe₂(CO₃)_3(s) ---> Fe₂O_3(s) + 3CO_2(g)

500

Complete and balance this equation:

LiCl_(aq) + NaNO_3(aq) ---> ?

LiCl_(aq) + NaNO_3(aq) ---> NR

Does not form a precipitate, gas, or a molecular compound, therefore the reaction does not occur.

RANDOM

100

Assuming there is water present, determine if the following are solid or aqueous:

1. Ca(OH)₂

2. HCl

3. SrSO₄

4. H₂Cr₂O₇

1. Aqueous

2. Aqueous

3. Solid

4. Aqueous

200

Can the following single replacement equations occur? If so, complete and balance them.

1. Au_(s) + FeCl_3(aq) ---> ?

2. Cu_(s) + AgNO_3(aq) ---> ?

3. Ba_(s) + CoSO4_(aq) ---> ?

1. NR

2. Cu_(s) + 2AgNO_3(aq) ---> Cu(NO₃)_2(aq) + 2Ag_(s)

3. Ba_(s) + CoSO4_(aq) ---> BaSO_4(s) + Co_(s)

300

Write the skeleton equation:

The gas sulfur trioxide produces sulfuric acid when it is bubbled through water.

SO_3(g) + H₂O_(l) ---> H₂SO_4(aq)

400

Complete and balance this equation:

Li₂CO_3(aq) + HC₂H₃O_2(aq) ---> ?

Li₂CO_3(aq) + HC₂H₃O_2(aq) ---> 2LiC₂H₃O_2(aq) + CO_2(g) + H₂O_(l)

500

Write the skeleton equation:

Pure copper can be produced by heating copper (II) sulfide in air. Sulfur dioxide gas is also produced in this reaction.

CuS_(s) + O_2(g) ---> Cu_(s) + SO_2(g)