The concentration term 'Parts per million' (ppm) is primarily used for trace quantities. Depending o — Solutions and Colligative Properties Chemistry Question

💡 Solution & Explanation

PPM represents one part in a million parts. Depending on the system, it can be defined contextually as mass of solute per $10^6$ units of solution mass ($w/w$), volume of solute per $10^6$ units of solution volume ($v/v$), mass per $10^6$ units of volume ($w/v$), or even as a mole ratio.