AnswersFoothill-B Period-Chemistry-2627BBalancing Oxidation-Reduction Equations

Reaction Rate Answers

10 verified answers6 views
1
Free Preview

Magnesium oxide does not readily decompose into magnesium and oxygen. The reaction is shown below.MgO(s) + 601.7 kJ Mg(s) + ½O2(g)Which factor plays the most important role in allowing this reaction to occur?

Question illustration
A
temperature
B
concentration
C
pressure
D
surface area
2
Free Preview

Which best explains why sawdust burns more quickly than a block of wood of equal mass under the same conditions?

A
The molecules move more quickly in the sawdust than in the block of wood.
B
The pressure of oxygen is greater on the sawdust.
C
More molecules in the sawdust can collide with oxygen molecules.
D
Oxygen is more concentrated near the sawdust than the block of wood.
3

Consider the energy diagram below.xn.Which line indicates a higher reaction rate?

Question illustration
A
A because it has a lower activation energy.
B
B because it has a lower activation energy.
C
A because its Grxn is much lower.
Option C
D
B because its Grxn is much lower.
Option D
4

Which applies to the collision theory?

A
Particles need to collide in order to react.
B
Particles may obtain successful collisions in any molecular orientation.
C
Temperature increase causes kinetic energy of particles to decrease.
D
Reactions do not have to begin with collision of molecules or particles.
5

Consider the reaction below.C2H4(g) + H2(g) C2H6(g)Which change would likely cause the greatest increase in the rate of the reaction?

Question illustration
A
decrease temperature and decrease pressure
B
increase temperature and decrease pressure
C
decrease temperature and increase pressure
D
increase temperature and increase pressure
6

Which term refers to the speed at which reactants are converted into products?

A
reaction rate
B
activation energy
C
meta stable state
D
spontaneous reaction
7

Consider the reaction below.Which is most likely the effect to the forward reaction if there is an increase in pressure of the system?

Question illustration
A
The reactant surface area increases.
B
The reaction rate decreases.
C
The reaction is not affected at all.
D
The reaction stops completely.
8

Ben observes how quickly some dry wood is burning in a campfire. Which term best relates to Ben’s observation?

A
reaction rate
B
activation energy
C
collision theory
D
spontaneous reaction
9

The diagram below shows the movement of particles.What does this piece of evidence best support?

Question illustration
A
the collision theory
B
the Maxwell-Boltzmann distribution
C
the effect of pressure on reaction rates
D
the effect of temperature on reaction rates
10

Which will cause an increase in the reaction rate between molecules?

A
Molecules have strong internal bonding.
B
Molecules collide more frequently.
C
Electrons in the bonds remain in a meta-stable state.
D
Electrons do not have enough energy to leave the bonds.
11

The production of water proceeds according to the following equation.2H2(g) + O2(g) 2H2O(g)Which describes a way to speed up the collisions between hydrogen and oxygen molecules to produce more water?

Question illustration
A
Use a less-intense source of heat on the reactants.
B
Maintain the same temperature of the reactants.
C
Place the reactants in a smaller container.
D
Reduce the concentration of the reactants.
12

Consider the energy diagram below.xn.Which line indicates a higher reaction rate?

Question illustration
A
A because it has a lower activation energy.
B
B because it has a lower activation energy.
C
A because its Grxn is much lower.
Option C
D
B because its Grxn is much lower.
Option D
13

Consider the reaction below.C2H4(g) + H2(g) C2H6(g)Which change would likely cause the greatest increase in the rate of the reaction?

Question illustration
A
decrease temperature and decrease pressure
B
increase temperature and decrease pressure
C
decrease temperature and increase pressure
D
increase temperature and increase pressure
14

Which best explains why sawdust burns more quickly than a block of wood of equal mass under the same conditions?

A
The molecules move more quickly in the sawdust than in the block of wood.
B
The pressure of oxygen is greater on the sawdust.
C
More molecules in the sawdust can collide with oxygen molecules.
D
Oxygen is more concentrated near the sawdust than the block of wood.
15

Ben observes how quickly some dry wood is burning in a campfire. Which term best relates to Ben’s observation?

A
reaction rate
B
activation energy
C
collision theory
D
spontaneous reaction
16

Consider the reaction below.Which is most likely the effect to the forward reaction if there is an increase in pressure of the system?

Question illustration
A
The reactant surface area increases.
B
The reaction rate decreases.
C
The reaction is not affected at all.
D
The reaction stops completely.
17

Which will cause an increase in the reaction rate between molecules?

A
Molecules have strong internal bonding.
B
Molecules collide more frequently.
C
Electrons in the bonds remain in a meta-stable state.
D
Electrons do not have enough energy to leave the bonds.
18

Magnesium oxide does not readily decompose into magnesium and oxygen. The reaction is shown below.MgO(s) + 601.7 kJ Mg(s) + ½O2(g)Which factor plays the most important role in allowing this reaction to occur?

Question illustration
A
temperature
B
concentration
C
pressure
D
surface area
19

The diagram below shows the movement of particles.What does this piece of evidence best support?

Question illustration
A
the collision theory
B
the Maxwell-Boltzmann distribution
C
the effect of pressure on reaction rates
D
the effect of temperature on reaction rates
20

Which term refers to the speed at which reactants are converted into products?

A
reaction rate
B
activation energy
C
meta stable state
D
spontaneous reaction

Did you find these answers helpful?

More from this Course

Quiz
17 verified answers

Balancing Oxidation-Reduction Equations

Quiz
10 verified answers

Balancing Oxidation-Reduction Equations

Quiz
10 verified answers

Quiz