Problem

Gastric juice contains hydrochloric acid, HCl. A

5.00 \text{ cm}^3

sample of gastric juice required

11.00 \text{ cm}^3

0.0100 \text{ mol dm}^{-3}

KOH for neutralization in a titration. What was the concentration of HCl in this fluid? If we assume a density of

1.00 \text{ g cm}^{-3}

for the fluid, what was the percentage by mass of HCl?