Collision Theory and Reaction Rates
Heat Transfer
Balancing Equations
Predicting Products of Reactions
Solubility and Net Ionic Equations
100
What are the 3 components of collision theory?
1. molecules must collide to react
2. molecules must collide with sufficient energy
3. molecules must collide at the correct orientation
100
You dissolve a salt in water and the beaker becomes cold. This is an example of an ______ reaction.
endothermic
100
___ NH4F + ___ AlCl3 → ___ NH4Cl + ___ AlF3
3 NH4F + AlCl3 → 3 NH4Cl + AlF3
100
1. Give the reaction type
2. Predict the product(s)
3. Balance the equation
C5H12 + O2 -->
Combustion
C5H12 + 8 O2 --> 5 CO2 + 6 H2O
100
Write the chemical formulas for one soluble ionic compound and one insoluble ionic compound.
Answers may vary.
Soluble examples: NaCl, Mg(NO3)2, NH4OH
Insoluble examples: AgCl, CaCO3, PbSO4
200
Name 4 ways to increase the rate of a reaction.
1. increase temperature
2. increase concentration
3. increase surface area
4. add a catalyst
200
What is the difference between an endothermic and an exothermic reaction?
Endothermic reactions absorb energy, exothermic reactions release energy.
200
__ PbSO4 → __ PbSO3 + __ O2
2 PbSO4 → 2 PbSO3 + O2
200
1. Give the reaction type
2. Predict the product(s)
3. Balance the equation
Li(s) + O2(g) -->
Synthesis
4 Li + O2 --> 2 Li2O
200
What are the spectator ions in the complete ionic equation below?
Na+ + Cl- + Ag+ + NO3- --> Na+ + NO3- + AgCl
Na+ and NO3-
300
Draw a diagram showing how surface area influences reaction rate.
300
Give 2 real life examples of endothermic and exothermic reactions (4 total).
Answers may vary.
Endothermic- ice melting, water evaporating
Exothermic- combustion, glow stick, hot pack
300
___ Ni + ___ H2SO4 → ___ H2 + ___ Ni2(SO4)3
2 Ni + 3 H2SO4 → 3 H2 + Ni2(SO4)3
300
1. Give the reaction type
2. Predict the product(s)
3. Balance the equation
Ca(ClO3)2 -->
Decomposition
Ca(ClO3)2 --> CaCl2 + 3 O2
300
Write the complete ionic equation for the following:
3Ba(NO3)2(aq)+ 2Na3P(aq)-->Ba3P2(s)+ 6NaNO3(aq)
3Ba2+ + 6NO3- + 6Na+ + 2P3- -->
Ba3P2 + 6Na+ + 6NO3-
400
How does a catalyst work to change the rate of a reaction? Draw an energy diagram showing an uncatalyzed and a catalyzed reaction.
400
Draw the energy diagram for an endothermic reaction. Label the overall energy change, the reactants and products, and the activation energy
400
_ Na2CO3 + _ H3PO4 → _ Na3PO4 + _ H2O + _ CO2
3 Na2CO3 + 2 H3PO4 → 2 Na3PO4 + 3 H2O + 3 CO2
400
1. Give the reaction type
2. Predict the product(s)
3. Balance the equation
H2SO4 + Mg(OH)2 -->
Acid-Base
H2SO4 + Mg(OH)2 --> MgSO4 + 2 H2O
400
Write the molecular, complete ionic, and net ionic equations.
HBr + LiOH -->
HBr(aq) + LiOH(aq) --> LiBr(aq) + H2O(l)
H+ + Br- + Li+ + OH- --> Li+ + Br- + H2O
H+ + OH- --> H2O
500
Draw an effective collision for the reaction below, representing each atom with a different color circle.
Cl + NOCl --> NO + Cl2
500
Molecules have to absorb energy to break bonds, and energy is released when bonds are formed. The stronger the bond, the more energy is absorbed or released.
Describe the relative strengths of the bonds broken and bonds formed in an exothermic reaction.
The bonds formed are stronger than the bonds broken.
500
___ C4H8O + ___ O2 → ___ CO2 + ___ H2O
2 C4H8O + 11 O2 → 8 CO2 + 8 H2O
500
1. Give the reaction type
2. Predict the product(s)
3. Balance the equation
Al + HNO3 -->
Single Replacement
2 Al + 6 HNO3 --> 3 H2 + 2 Al(NO3)3
500
Write the molecular, complete ionic, and net ionic equations.
lithium chromate + barium chloride -->
Li2CrO4(aq) + BaCl2(aq) --> 2 LiCl(aq) + BaCrO4(s)
2Li++CrO42-+Ba2++2Cl- --> 2Li++2Cl-+BaCrO4
CrO42- + Ba2+ --> BaCrO4