Chemistry 12:  Today we started with a review of Hydrolysis, and the we learned how to calculate pH in solutions of weak bases.  Due Thursday is U4 # 85-89, and 70.  You were also given a minireview of Hydrolysis, see the key here.

84.  0.024 M SO₃^2-

85.  0.0019 M OH^-, pH 11.28, pOH 2.72, 5.3 x 10^-12 M H⁺

86.  0.059 M N₂H₄

87.  K_b = 1.04 x 10^-3

88. pH 11.50

89. K_b = 9.34 x 10^-7

Science 9:  Today we had Staci Klein here to do the last classroom portion of Farm to Table.