Highlander Help

CHAPTER 4 BASIC HOMEWORK

Resources:

Have you found videos, websites, or explanations that helped you understand this chapter? Let us know and we'll add them to "Resources" part of this page for other students to use.


  Answer Explanations Are Now Available                             

 

Question 1

Consider the balanced equation:

5A + 5B ↔ 7C + 5D

How many moles of B are required to produce 5 moles of D?

Correct

 

Explanation

 RATIOS 


5B:5D


aka for every 5Bs used 5Ds are created


so 5Bs are need to create 5Ds

 

Question 2

Consider the new balanced equation:

3A + 7B ↔ 5C + 4D

How many moles of D are produced when 5 moles of C are produced?

Correct

 

Explanation

Whenever 5Cs are created, 4 Ds are created as well as a reaction will always go fully (ratio wise)!

 

Question 3

Consider the balanced equation:

5A + 7B ↔ 7C + 6D

How many moles of B are required to produce 6 moles of D?

Correct

 

Explanation

 7B:6D


7 moles of B create 6 moles of D!


Pretty friggin' lit if I do say so myself!

 

Question 4

Consider the balanced equation:

6A + 2B ↔ 8C + 2D

How many moles of C can be produced from 8 moles of B?

Correct

 

Explanation

 2B:8C

2*4=8

8*4=32

8B:32C

 

Question 5

Consider the new balanced equation:

7A + 3B ↔ 6C + 2D

How many moles of A are required to react with 8 moles of B?

Correct

 

Explanation

 7A:3B

3X=8

X=8/3

7*(8/3)= 56/3=18.66

 

Question 6

Consider the balanced equation:

6A + 2B ↔ 7C + 2D

How many moles of C can be produced from 0.16 moles of B?

Correct

 

Explanation

 2B:7C

2X=.16

X=(2/25)

7*(2/25)=14/25


 

Question 7

Consider the new balanced equation:

5A + 2B ↔ 5C + 3D

How many moles of A are required to react with 0.76 moles of B?

Correct

 

Explanation

 5A:2B

2X=.76

5*(.76/2)=1.9

 

Question 8

Consider the balanced equation:

2A + 5B ↔ 3C + D

8 mol A are mixed with 15 mol B at an elevated temperature. After 4 mol of A have reacted, how much B is left?

Correct

 

Explanation

 2A:5B

8A:20B

6A:15B (B is the limiting reagent)


4A:10B 

 

15B-10B= 5B

 

Question 9

Consider the balanced equation:

2A + 5B ↔ 3C + D

0.37 mol A are mixed with 1.16 mol B at an elevated temperature. After 0.05 mol of A are left, how much B is left? Hint given in feedback. 

Correct


 

Explanation

 Hint, find out how much A reacted, then proceed as in the previous problem.


2A : 5B

.37A : .925B (A is the limiting reagent)

.464 : 1.16B


..37-.05=.32

.32A:.8B


1.16-.8=.36

 

Question 10

Consider the balanced equation:

2A + 5B ↔ 3C + D

0.37 mol A are mixed with 1.15 mol B at an elevated temperature. After 0.05 mol of A are left, how much C is produced? 

Correct

 

Explanation

 Use the steps above kiddos I believe in ya alright truly this is only the beginning!


2A:5B:3C

.37A:.925B:.555C

.32A:.80B:.48C