AnswersLA-Chemistry AStoichiometric Calculations

Stoichiometric Calculations Answers

17 verified answers3 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

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

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.
8

Based on your experience, which reactions are likely to be self-sustaining? Check all that apply.

A
burning gasoline in a car engine
B
hard-boiling an egg
C
thrusting a rocket into space
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

Which graph represents the system with the lowest temperature?

A
orange
B
red
C
blue
11

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.
12

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

A
1%
B
5%
C
30%
13

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
14

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

Question illustration
A
increased rate
B
decreased rate
C
no change in rate
15

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

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

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
.
17

AgNO3(aq) + Cu(s) CuNO3(aq) + Ag(s)

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

Did you find these answers helpful?

More from this Course

Instruction
17 verified answers

Instruction

Instruction
16 verified answers

Instruction

Instruction
15 verified answers

Limiting Reactant and Percent Yield