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. A group of students was required to determine the concentration of a solution of hydrochloric acid, HCl, provided for a titration competition. In each

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A group of students was required to determine the concentration of a solution of hydrochloric acid, HCl, provided for a titration competition. In each titration, a 25.00mL aliquot of a freshly standardised solution of 0.2450M sodium hydroxide, NaOH, was pipetted into a conical flask and titrated against the HCl solution. An appropriate indicator was added. The experiment was repeated until three concordant results were obtained. The data for these titrations is shown in the following table. 1. Based on these results, the concentration of HCl is A. 0.1322M B. 0.4540M C. 1.322M D. 2.202M 2. The experimental value of the concentration of HCl obtained from these titrations was less than the actual value. Which one of these actions by the students most likely accounts for the lower than expected result? A. rinsing the burette with water B. rinsing the pipette with water C. rinsing the conical flask with water D. leaving the funnel in the top of the burette

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