Question

brief note on primary and secondary standard with exemple?​

Answer 1

1 Primary and Secondary Standards. We divide analytical standards into two categories: primary standards and secondary standards. A primary standard is a reagent for which we can dispense an accurately known amount of analyte. For example, a 0.1250-g sample of K2Cr2O7 contains 4.249 × 10–4 moles of K2Cr2O7.

Answer 2

A primary standard is a reagent for which we can dispense an accurately known amount of analyte. For example, a 0.1250-g sample of K2Cr2O7 contains 4.249 × 10–4 moles of K2Cr2O7. ... Reagents that do not meet these criteria are secoondary standards.