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Feso4 is not a primary standard?

  1. Nov 29, 2006 #1
    feso4 is not a primary standard??

    hi ppl,
    someone plssss help me---why is feso4 not a primary standard?
     
  2. jcsd
  3. Nov 29, 2006 #2

    chem_tr

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    Hi

    It cannot be a primary standard. Because it is not stable. A primary standard must be cheap, inert (stable), etc... You may want to do a google search about "primary standards".
     
  4. Nov 30, 2006 #3
    what about fas?

    hi ,
    thanks for ur reply but ferrous ammonium sulphate is not a primary standard acc to u??
     
  5. Dec 1, 2006 #4

    GCT

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    You need to know the characteristics of a primary standard to answer the question, as some of the ones that chem tr has mentioned.
     
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