Chrysanthemic acid is isolated from chrysanthemum flowers. the ir spectrum of chrysanthemic acid exhibits five signals above 1500 cm-1. identify the source for each of these signals.

IR (Infrared) spectrum is used to determine the functional groups in the molecule, by measuring the vibrations of the atoms.

The structure of chrysanthemic acid is shown in the picture.

The five signals of chrysanthemic acid which are above the are:

1. The vinylic bond ().

2. The bond ().

3. The bond of carboxylic acid ()

4. The bond ()

5. All other bonds ().

the correct answer is b. a strong acid completely dissociates to its ions when dissolved in water. completely dissociates to and ions. a is incorrect because does not fully ionize to and ions and some remain as the compound . c and d are incorrect because, and do not fall into the category of bronsted lowry acids. a bronsted lowry acid is a proton donor and since both molecules do not have a proton to donate they are not bronsted lowry acids. likewise,   if we use the lewis acid definition, they cannot be acids. a lewis acid is an electron pair acceptor. both and have a complete octet so can not accept any electrons which disqualifies them as acids.