(b) Propionic acid is treated first with Br₂ and one equivalent of PBr3, then with a large excess of ammonia. Incorrect Br NH₂

Rank the following organic compounds in order of increasing basicity. I N As. = III P 11

Arrange the following molecules in increasing order of acidity. Base it only on their structural differences and explain how it is so.

Choose the weak base from the compounds below. OCH3COOCH3 CH3SCH3 OCH3CH21 O(CH3)2NH OCH3CH3

The presence of a pi bond also makes a compound a base. With this in mind, draw the conjugate acid of ethylene, CH2=CH2.

Part A: Please calculate pKa of formic acid below:  (HCOOH  H+ + HCOO-) Part B: What is pH of a solution containing 10 mM formic acid? G°f HCOOH = -372 kJ/molG°f HCOO- = -351 kJ/molG°f H+ = 0 kJ/mol1

H2SO4 + NH3  ====   HSO4- + NH4+   .  Which of the products is a conjugate base?

Illustrate the determining the Relative Acidity of Compounds ?

2. Consider the following equilibrium: H₂O(l) + HC₂H₂O₂(aq)=H₂O*(aq) + C₂H₂O₂(aq) Why will the addition of NaOH to a solution of acetic acid cause the concentration of the acetate ion to increase? ring

4. The pk, of vanillin is about 9, which is much more acidic than a normal alcohol. Draw a reaction showing the deprotonation of vanillin with NaOH, and then draw six resonance structures of the conjugate base. Draw the hybrid structure and clearly indicate how the negative charge is distributed in the compound.