Chapter 8, Problem 101P

Interpretation Introduction

Interpretation:

The mass of $\text{HCl}$ contained in $2\text{ L}$ of $0.10\text{ M}$ gastric juice is to be calculated.

Concept introduction:

The formula to calculate the molarity is as follows:

  $\text{Molarity}\left(\text{mol/L}\right)=\frac{\text{number of moles}}{\text{volume}\left(\text{L}\right)}$

The formula to calculate the number of moles is as follows:

  $\text{Number of moles}=\frac{\text{Given mass}}{\text{Molar mass}}$

Rearrange the above formula to calculate the mass as follows:

  $\text{Given mass}\left(\text{g}\right)=\left(\text{Number of moles}\left(\text{mol}\right)\right)\left(\text{Molar mass}\left(\text{g/mol}\right)\right)$