CHEMISTRY 31

Fall, 2012 - Dixon

Homework Set 3

 

 

Chapter                     Problems                                                               Date to finish    

Set 3.1                                                                                                          Nov. 28

Ch. 8                            6, 8, 11, 19, 21 [parts of set 2.3 we didn't get to last time]

                                    26, 33, 38

Ch. 9                            3, 4

 

Additional Problem:  A buffer is being prepared by adding HCl to pyridine (C5H5N, see Appendix G for pKa of conjugate acid).  It is desired to make a buffer at pH = 5.76 by adding 1.00 M HCl to a 250 mL volumetric flask containing 1.720 g of pyridine.  Determine the volume of HCl that is needed to add to the volumetric flask which will be diluted to the mark to make the buffer.

Solutions

 

Set 3.2                                                                                                          Dec. 5

Ch. 9                            16, 29

Ch. 10                          2, 4, 6, 14, 23