Question

A 0.255 g sample of antacid was tested and neutralized 23.8 mL of 1.0 M HCl. How many mL of acid would be neutralized by a two pack of tablets weighing 750 mg each

Answer 1

Due to the fact that, formally, we do not have data on the molar mass and volume of the titrated drug, we will make a “dirty” calculation based on the ratio of the mass of the drug to the volume of acid:

$$0.1g : 9.33 mL$$

Then for 2 packs of 750 mg each we have:

$$V(HCl) = 139.95 mL ≈ 140mL$$