Chemistry 12:  Unit 4 # 74 - 79 due Thursday.  Lab 20G due Thursday.

K_a Calculations Answer Key

74.  [H⁺] = 6.7 x 10^-5

75.  pH 6.16

76.  [HCOOH] = .78 M

77.  Ka = 9.38 x 10^-3

78.  [H2CO3]  = 0.010 M

79.  pH 4.89

80.  Ka = 2.06 x 10^-10

Chemistry 11:  Today started with review of atomic radius, then we took notes on Ionic Bonding, then we read pg 171 - 176.  Unit 8 # 62-67 is due Thursday.  Lab 11A Part III is not due Thursday.


Monday, May 6

Chemistry 11:  Unit 8 # 31-39 was collected.  Read pg 170-175 and do Unit 8 # 53-55, 57-61

Chemistry 12:  Unit 4 # 69 was collected.  Finish Lab 20G (all parts to do with Part I to Part IV, plus a fine conclusion).  Finish Lab 20H Part I.  Unit 4 # 70 due Tuesday.  Quiz on Hydrolysis.


Friday, May 3

Chemistry 11: Unit 8 # 13-20, 22-27 was collected.  Watch Mendeleev's Business Card on Youtube.  Read section 8.2 and do Unit 3 # 31-39.  There was a homework Quiz today on Unit 8 # 13-20, 22-27.

Chemistry 12:  Read 4,13 about Hydrolysis.  Do # 69 (Acidic -   f,i,j ;  Basic - a,b,d,g ; Neutral - c,e,h).  Finish Lab 20G due Thursday.  Quiz like pg 69.


Thursday, May 2

Chemistry 12:  Quiz on pH, read 4.16 and do 94,95,97,100, 102,104.  Lab 20G.  Minireview 4.11 WS.

Chemistry 11:  The Lab 11A Graphs were collected today.  Read p 144-156.  Do Unit 8 # 13-20, 22-27 which is due Friday.  Start Lab 11A part III if you are done.