Reaction Rate Answers

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Question illustration
A
spontaneous
B
nonspontaneous
3

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
.
4

Grind a metal into a fine powder.

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.
5

Grind a metal into a fine powder.

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.
7

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.
8

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.
11

Question text not available

Question illustration
A
spontaneous
B
nonspontaneous
12

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.
13

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
14

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.
15

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.
16

Raise the boiling point of water with a pressure cooker.

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.

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