In preparing to titrate an acid with a base, a student puts on goggle on. The student uses burets to dispense and measure the acid and he titration. In each of two trials, a 0.500 M NAOH(aq) solution is ac A containing a volume of HCl(aq) solution of unknown conce- nolphthalein is the indicator used in the titration. The calculated volur he two trials are recorded in the table below. Volumes of Base and Acid Used in Titration Trials Trial 1 Trial 2 Molarity (M) Volume Used (mL) 16.87 Solution Volume Used (aq) (mL) NaOH 0.500 17.03 10.22 10.12 HCI

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