Make a list of the anions of the six strong monoprotic acidsdiscussed in lecture. These anions are said to have no effect onthe pH of an aqueous solution. The same is true for solutions ofstrong bases - their conjugate acids (which are Group 1 or Group 2cations) are very weak acids, and therefore, have virtually noeffect on the pH of the solution.
4. Make a list Group 1 and Group 2 cations, and note that theseions are said to have no effect on the pH of an aqueous solutionwith the exception of Be2+. The situation is different, however,for the conjugate acid of a weak base, or the conjugate base of aweak acid.
5. A weak base: Write a balanced equation for the protonation ofammonia, using water as areactant.______________________________________________ a. Whatspecies is the conjugate acid of ammonia? ________________ b. TheKb of ammonia is 1.8 x 10-5 . What is the Ka of its conjugate acid?Show work.
6. Hypoiodous acid (HIO) has Ka = 2.3 x 10-11. Which is astronger acid, HIO or NH4 +? Explain your reasoning. Acids, Bases,Salts and Buffers Prelab Assignment revised by Bruce E. Wilcox,Fall 2017 Name _____________________________ Assignment: Completethis assignment (and the reproduction in your manual) and hand thisform in at the beginning of lab. Also copy the work from pages 3 –4 into your notebook. 2 Now you have seen that the conjugate acidof a weak base can exhibit significant acid behavior. What aboutthe conjugate base of a weak acid?
7. Write the balanced equation for the ionization of nitrousacid in water._____________________________________________________ a. The Ka ofHNO2 is 4.3 x 10-4 . What is the Kb of its conjugate base? Showwork.
