AnswersFoothill-B Period-Chemistry-2627BLab: Enthalpy

Lab: Enthalpy Answers

18 verified answers2 views
1
Free Preview

Question text not available

Question illustration
A
spontaneous
B
nonspontaneous
2
Free Preview

Question text not available

Question illustration
A
spontaneous
B
nonspontaneous
3

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

Question illustration
A
increased rate
B
decreased rate
C
no change in rate
4

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

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

Question text not available

Question illustration
A
spontaneous
B
nonspontaneous
7

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.
8

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.
9

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

A
orange
B
red
C
blue
10

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

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

A
1%
B
5%
C
30%
12

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

Question illustration
A
increased rate
B
decreased rate
C
no change in rate
13

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.
14

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
.
15

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

Question illustration
A
increased rate
B
decreased rate
C
no change in rate
16

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.
17

Compress the air/fuel mixture inside an engine cylinder with a piston.

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.
18

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.

Did you find these answers helpful?

More from this Course

Assignment
23 verified answers

Lab: Enthalpy

Assignment
22 verified answers

Assignment: Reflect on the Lab

Instruction
14 verified answers

Instruction