AnswersFL-2003350-Chemistry 1 HonorsReaction Rate

Reaction Rate Answers

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1
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Question illustration
A
spontaneous
B
nonspontaneous
2
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Question text not available

Question illustration
A
spontaneous
B
nonspontaneous
3

Question text not available

Question illustration
A
spontaneous
B
nonspontaneous
4

2SO3(g) 2SO2(g) + O2(g)

Question illustration
A
increased rate
B
decreased rate
C
no change in rate
5

Na2CO3(s) + 2HCl(aq) CO2(g) + H2O(l) + 2NaCl(aq)

Question illustration
A
increased rate
B
decreased rate
C
no change in rate
6

The diagram to the right shows energy for two reactions, A and B.Which reaction has the higher Grxn?

Question illustration
A
Reaction A has the higher Grxn.
B
Reaction B has the higher Grxn.
C
They are the same.
D
There is not enough information to tell.
7

The diagram shows three Maxwell-Boltzmann frequency graphs.Which graph represents the system with the highest temperature?

A
orange
B
red
C
blue
8

Which condition will cause a reaction to occur? Check all that apply.

A
Particles and molecules must collide.
B
Collisions must be energetic enough to overcome the activation barrier.
C
Collisions must be properly oriented for the relevant parts to react.
D
The energy needed to overcome the activation energy comes from the kinetic energy of random collisions.
9

Based on this information, what is the most likely reason that refrigerating most foods reduces the rate at which they spoil?

A
The lower temperature causes foods to expand, increasing the distances between molecules and reducing the reaction rate.
B
The lower temperature reduces molecule speeds, reducing the number of effective collisions.
C
The lower temperature causes food to contract, increasing the distances between molecules and reducing the reaction rate.
10

Due to lower atmospheric pressure at high altitudes, water boils at 92°C instead of 100°C. How will this difference affect cooking times? How will it affect the time needed to boil spaghetti noodles as compared to the amount of time needed at sea level?

A
It will be longer.
B
It will be shorter.
C
It will be the same.
11

What concentration of hydrogen peroxide would cause this reaction to proceed most quickly?

A
1%
B
5%
C
30%
12

Which action would most likely increase the reaction rate for this step?

A
using larger pieces of the solid
B
using a more concentrated potassium hydroxide solution
C
adding water to the system
13

N2(g) + 3H2(g) 2NH3(g)

Question illustration
A
increased rate
B
decreased rate
C
no change in rate
14

Magnesium reacts with hydrochloric acid to form hydrogen gas and magnesium chloride:Mg(s) + 2HCl(aq) MgCl2(aq) + H2(g)Which actions would increase the rate of reaction? Check all that apply.

Question illustration
A
using hot hydrochloric acid solution
B
adding hot water to the solution
C
using magnesium powder instead of a large piece of magnesium
D
increasing pressure on the system
15

Refrigerate food to keep it from spoiling.

A
Particles collide more frequently.
B
Particles collide less frequently.
C
Particles collide with more force.
D
Particles collide with less force.
E
Particles do not collide.
16

Which reaction has the higher activation energy?

A
Reaction A has the higher activation energy.
B
Reaction B has the higher activation energy.
C
They are the same.
D
There is not enough information to tell.
17

Which graph represents the system with the lowest temperature?

A
orange
B
red
C
blue
18

SnO2(s) + 2H2(g) Sn(s) + 2H2O(g)

Question illustration
A
increased rate
B
decreased rate
C
no change in rate
19

Add inert water to a reaction solution.

A
Particles collide more frequently.
B
Particles collide less frequently.
C
Particles collide with more force.
D
Particles collide with less force.
E
Particles do not collide.
20

Which reaction will most likely proceed faster?

A
Reaction A will most likely proceed faster.
B
Reaction B will most likely proceed faster.
C
They are the same.
D
There is not enough information to tell.
E
.

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