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Kinetics and Equilibrium Flashcards | StudBud
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Kinetics and Equilibrium
Kinetics and Equilibrium
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For our Chem class review on kinetics and equilibrium.
Flashcards
22 cards
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Practice quiz
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Questions
22
Answers
1
What will be the effect on the reaction rate if a catalyst is added?
There will be no change.
It will be slower.
It will be faster.
No reaction will take place.
2
Nature is always proceeding to a state of higher entropy according to _________?
The Second Law of Thermodynamics
Common Sense
The First Law of Thermodynamics
The Monroe Doctrine
3
Which choice will always lead to a spontaneous reaction?
-ΔH, +ΔS
+ΔH, -ΔS
Δy/Δx
+ΔH, +ΔS
4
The difference between potential and activation energy is called ____________?
Heat of reaction.
Rate determining step.
Catalyst.
Reaction mechanism.
5
What is love?
Chemistry
No more
Don't hurt me
Baby don't hurt me
6
The only stress that changes the keq is a change in?
Temperature.
Entropy.
Pressure.
Elements.
7
A solution exhibiting equilibrium between the dissolved and undissolved solute must be
Supersaturated
Superman
Saturated
Unsaturated
8
Enthalpy favors what type of reaction?
Exothermic
Teen reactions to viral videos
Endothermic
Heat of reaction
9
2KClO
3
(s) -> 2KCl (s) + 3O
2
(g)
Decrease in entropy
No change in entropy
Increase in entropy
Increase in enthalpy
10
The graph represents a chemical reaction. The reaction is best described as
Endothermic, because energy is absorbed
Exothermic, because energy is released
Exothermic, because energy is absorbed
Chemistry isn't real
11
Water in a sealed flask at 298 K is in equilibrium with its vapor. This is an example of
Phase equilibrium
Science
Solution equilibrium
Chemical equilibrium
12
What rule says when a system at equilibrium is disturbed the system shifts to reduce the change
Le Chatelier's Principle
Gibbs Free Energy
Darwin's Theory of Evolution
Le Poulet's Principle
13
Which statement must be true when solution equilibrium occurs?
The solution is supersaturated.
The concentration of the solution remains constant.
The solution is at STP.
Capitalism is good
14
A solution that is at equilibrium must be
Saturated
Unsaturated
A very nice solution
Supersaturated
15
When the crystallizing rate of the solute equals the dissolving rate of the solute must be
Unsaturated
Dilute
Magic
Saturated
16
Given the reaction: 2SO
2
(g)+O
2
(g)↔2SO
3
(g)+heat, what change will shift it to the right?
Decreasing the pressure.
Increasing the temperature.
Adding more O2
Adding a catalyst.
17
What type of collisions lead to reactions?
Effective collisions.
No collisions.
Inelastic collisions.
Car accidents.
18
A catalyst increases the rate of a chemical reaction by
Lowering the activation energy of the reaction
Lowering the potential energy of the products
Raising the temperature of the reactants
Raising the concentration of the reactants
19
Randomness determines if a reaction is spontaneous in this.
Heat of reaction
Stalin
Enthalpy
Entropy
20
Which one of the following will change the value of an equilibrium constant?
Changing the volume of the reaction vessel
Varying the initial concentrations of products
Varying the initial concentrations of reactants
Changing temperature
21
Which interval in the potential energy diagram represents the heat of reaction?
B
A
D
C
22
A chemical change in which all reactants are in the same phase is called a ____________?
Homogeneous reaction.
Activated energy.
Rate determining step.
Heterogeneous reaction.
