Calculate the ph at the half-equivalence
Calculate the pH at the half-equivalence point where a solution having an unknown concentration of benzoic acid (Ka= 6.5x 10-5) is titrated using a standardized solution of sodium hydroxide.
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Compute the absolute pressure at the bottom of a fresh-water lake at a depth of 32.1 m. Suppose the density of the water is around 1.00 x 103 kg/m3 and the air above is at a pressure of 101.3 kPa.
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