Which compound is LESS stable?

  • Thread starter mnnob07
  • Start date
  • #1
17
0
below are two simple compounds. this is from a first semester general chemistry test and there were four compounds total all with the same number of C H and O we had to tell which one was least stable and why.

I don't remember the other two because both had a formal charge of 0 on everything while these two had a +1 on the O (most of the time not a good sign) and -1 on the C.

I picked the first one as less stable because of the formal charges and because I was used to seeing the hydrogen atoms bonded to the C.

Can anyone tell me if I was right and what is the best way to approach these problems aside from straight formal charges?
 

Attachments

  • chemistry_e73460a0982d798e48b7e2efa8d846cf.jpg
    chemistry_e73460a0982d798e48b7e2efa8d846cf.jpg
    3.1 KB · Views: 375

Answers and Replies

  • #2
GCT
Science Advisor
Homework Helper
1,728
0
Does the top carbon have a hydrogen on it? Please make sure that all structures have the right numbers of hydrogen.
 
  • #3
17
0
What do you mean? notice that there are two structures seperated by a bit of whitespace. The top structure has no hydrogens on the carbons. Would you like me to draw the lone pairs?
 
  • #4
17
0
I drew the lone pairs on the top one:
 

Attachments

  • chemistry_7fd8803bfdbb9e59c928e9a12919b000.jpg
    chemistry_7fd8803bfdbb9e59c928e9a12919b000.jpg
    1.7 KB · Views: 403
  • #5
GCT
Science Advisor
Homework Helper
1,728
0
This problem is a test of your understanding of the concept of oxidation states - there a rules in calculating these values and it does involve considering the formal charge - oxidation states also takes into account the type of atoms that a particular central atom is bonded to as well as its bonding arrangement while formal charge takes into account soley the bonding arrangement of the particular atom.
 
Last edited:

Related Threads on Which compound is LESS stable?

  • Last Post
Replies
1
Views
2K
  • Last Post
Replies
6
Views
878
Replies
1
Views
1K
Replies
5
Views
3K
  • Last Post
Replies
1
Views
2K
  • Last Post
Replies
4
Views
8K
  • Last Post
Replies
5
Views
21K
Replies
0
Views
2K
Replies
1
Views
3K
Top