Tuesday, November 29, 2016

Chemistry 12:  U4 # 74-80.  Today I collected Lab 20B and unit 4 # 69, 71

Ka 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
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