When a valid electron dot structure is written, how many double bonds will the molecule contain?
Can someone help me understand step by step how to do this problem.
- AmyLv 710 months ago
Each oxygen atom needs two bonds. Hydrogen needs one. Carbon needs four.
Figure out which bonds are missing and add them to the drawing.
- Bone AloneLv 710 months ago
Two. You start with the functional groups and see if there’s any that you recognize right away. In this case, you see -COOH which is a carboxylic group. It has one double bond between the carbon and one of the oxygen. You see two in the sample so there’s 2 double bonds.
Now go to the carbon and count how many bonds it has. All carbon must have 4 bonds. If you include the C=O bond, it has 4 bonds so it can’t have any more bonds. O-H has one bond.
There’s nothing else so 2 double bonds.
H - O - C - C - O - H
Ignore the periods. They’re there to make things line up.