Question

Based upon the molarities of the standardized HCl and standardized NaOH, and the volumes of each added to analyze the antacid samples, calculate the MILLIMOLES of HCl needed to neutralize the tablet per MILLIGRAM of sample.

Average Molarity HCl: 0.4548
Average Molarity NaCl: 0.1048
Vol HCl(mL): 14.10
Vol NaCl(mL): 14.60
Mass Tablet: 1.333g
Mass Antacid: 0.613

I know the formula, but I'm not sure as to what values to use...

Answer 1

((concentration HCl in mmol/mL)(Volume HCl in mL)- (concentration NaOH in mmol/mL)(Volume NaOH in mL))/((1000mg/g)(mass antacid sample in grams))