Question #16395
What are primary standard substance and secondary standard substanse?
Expert's answer
Primary standards have some peculiar properties:
They are nonsensitive to
atmospheric oxygen
They have known formula and molecular weight
They are
usually high molecular weight compounds
They have a constant concentration
/uniform composition for a long period of time
They are powerful
reactants
Secondary standards are:
Influenced by
atmosphere/environment
Concentration change over time
Usually powerful
reactants
Usually cheap & easy to use
They are nonsensitive to
atmospheric oxygen
They have known formula and molecular weight
They are
usually high molecular weight compounds
They have a constant concentration
/uniform composition for a long period of time
They are powerful
reactants
Secondary standards are:
Influenced by
atmosphere/environment
Concentration change over time
Usually powerful
reactants
Usually cheap & easy to use
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Comments
Dear visitor Unfortunately, the statement of your question is a bit confusing. What do you need to be done? Please, give us the details so we could help you
what about its defination?