Part A. The formate ion, HCO2− , is formed when formic acid dissolves in water. A number of possible resonance structures for this ion are shown. Which of these structures are valid and which are invalid?
Drag each item to the appropriate bin.
Often it is possible to write more than one correct electron-dot structure for a molecule or ion, differing only in the placement of valence electrons. The actual electronic structure of the species is a composite of all these contributing structures. This composite is referred to as a resonance hybrid and the species is said to exhibit resonance. The contributing resonance structures are shown being linked by a double-headed arrow (↔).
Frequently Asked Questions
What scientific concept do you need to know in order to solve this problem?
Our tutors have indicated that to solve this problem you will need to apply the Resonance Structures concept. You can view video lessons to learn Resonance Structures. Or if you need more Resonance Structures practice, you can also practice Resonance Structures practice problems.