Chapter 12, Problem 69RQ

Interpretation Introduction

Interpretation:

The mole percent of ammonia and the molal concentration (m), which is present 7.50% by mass, are to be calculated.

Concept Information:

Molal concentration is expressed by dividing the moles of solute by the mass of solvent (generally water) in kilograms. It is intensive (does not get affected by variables) in nature.

Mole percent is the quantity which is obtained by dividing the number of moles of ammonia present by the sum total of moles of solute (ammonia) and solvent (water). It is further multiplied by $100$ to get it in percent form.