Percent Purity
What is Percent Purity?
Percent purity is the percentage by mass of a desired substance in a sample that also contains impurities, calculated as (mass of pure substance / mass of sample) × 100%. It is used in analytical chemistry to assess the quality of reagents and products and in stoichiometric calculations to determine actual yield. A substance with a high percent purity contains very little impurity and is suitable for precise quantitative work.
Key Facts
Frequently Asked Questions
Percent purity is the percentage by mass of a desired substance in a sample that also contains impurities, calculated as (mass of pure substance / mass of sample) × 100%. It is used in analytical chemistry to assess the quality of reagents and products and in stoichiometric calculations to determine actual yield. A substance with a high percent purity contains very little impurity and is suitable for precise quantitative work.