The weak base propylamine (CH3(CH2)2NH2) has a Kb = 4.7 x10-4.  It can be used in some pharmaceuticals and pesticides.  A 25.0 mL sample of 0.185 M propylamine solution was titrated with 0.120 M HCl.  What is the pH of this solution at the equivalence point?     A. 2.23   B. 5.90   C. 2.03   D. 5.70   E. 5.74

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Acid Base Titration

An acid-base titration is the method of quantitative analysis for determining the concentration of an acid and base by exactly neutralizing it with a standard solution of base or acid having known concentration.