Chapter 2, Problem 59P

For each molecule below, draw the conjugate acid or conjugate base or both if the molecule hasboth a conjugate acid and a conjugate base (e.g., water).

Complete the equation for the reaction between each Lewis acid-base pair. In each equation, label which starting material is the Lewis acid and which is the Lewis base; use curved arrows to show the flow of electrons in each reaction. In doing this problem, it is essential that you show valence electrons for all atoms participating in each reaction. (a) (b) (c) (d)

Answer true or false to the following statements about the mechanism of acid-base reactions. (a) The acid and base must encounter each other by a collision in order for the proton to transfer. (b) All collisions between acids and bases result in proton transfer. (c) During an acid-base reaction the lone pair on the base fills the A-H antibonding sigma orbital.

Formic acid, HCOOH, is found in ants. Write a balanced chemical equation to represent why an aqueous solution of formic acid is acidic.

What is the strongest base? NH₂ NH₂ 6 ONH

Glycolic acid, HOCH2CO2H, is the simplest member of a group of compounds called αhydroxy acids, ingredients in skin care products that have an OH group on the carbon adjacent to a CO2H group. Would you expect HOCH2CO2H to be a stronger or weaker acid than acetic acid, CH3CO2H?

Rank the following compounds according to acidity, 1 being the most acidic and 4 being the least acidic. First, list the ranking number followed by the compound letter in order from 1 to 4, and then explain your reasoning in a sentence or two.

CH3O- is a stronger base than CH3OH. * O False O True

Indicate whether the phenol on the left of each pair is more or less acidic than the one on the right. HO N=C HO The phenol on the left is: но F3C HO The phenol on the left is: H2N >