A 25.00 mL sample of HBr is titrated with a 0.150 M standardized sod.pdf

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University of New South Wales*
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CHEM ANALYTICAL
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Feb 11, 2024
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A 25.00 mL sample of HBr is titrated with a 0.150 M standardized sodium hydroxide solution. The endpoint was reached when 18.80mL of titrant had been added. Calculate the molar concentration of the HBr. Solution Balanced chemical equation is: NaOH + HBr ---> NaBr + H2O According to balanced reaction: 1*number of mol of NaOH =1*number of mol of HBr M(NaOH)*V(NaOH) =M(HBr)*V(HBr) 0.15*18.8 = M(HBr)*25.0 M(HBr) = 0.11 M Answer: 0.11 M
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