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Conductivity - Therese Nguyen Equivalence Point Using...

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Therese Nguyen Equivalence Point Using Conductivity July 1, 2010 Abstract Conductivity is monitored during the reaction between barium hydroxide Ba(OH) 2 and sulfuric acid H 2 SO 4 . The equivalence point is determined using conductivity of both solutions. When the equivalence point of conductivity is reach for both barium hydroxide and sulfuric acid, the concentration of the barium hydroxide solution can be calculated. Data Chemical reaction between barium hydroxide and sulfuric acid: Ba(OH) 2 + H 2 SO 4 → BaSO4 + 2 H 2 O Table 1 summarizes the molarity, volume and moles of sulfuric and barium hydroxide. Table 1. Data calculation table Molarity (M) H 2 SO 4 .02 Volume (mL) H 2 SO 4 20 Moles H 2 SO 4 0.004 Moles Ba(OH) 2 0.004 Molarity (M) Ba(OH) 2 .08 Table 2 summarizes the equivalence point and volume using the buret method. Table 2. Equivalence Point Buret Method Equivalence Point 56.6µS/cm Volume (mL) of Ba(OH) 2 52.0 mL Table 3 summarizes the equivalence point and volume using the alternative regression analysis method.
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