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Mole% and wt % difference

  1. Feb 16, 2013 #1
    hello forum
    I am working on NKBT Perovskite material.My formula is (Na0.5 K0.5)0.5 (Bi)0.5 TiO3
    I am using NaNo3,KNO3,Bi(NO3)3.5H2O,TiO2 powders
    my question is how much powder in grams I have to take according to stichometry.
    Do I have to work in wt% or in Mole %.
    is there any difference?
    I am using this method
    NaNO3 in Grms = molecular wt of NaNO3*no.of moles of NaNO3*5(i want to make 5 grms of total sample)/total molecular weight of compound.
    Is this correct?
    plz reply.
    actuall I am a physics major.
     
  2. jcsd
  3. Feb 16, 2013 #2

    Borek

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    Staff: Mentor

    To prepare the mix you have to convert everything to grams, there is no other reasonable way to measure amount of the solid than to weight it.

    Calculate molar ratio first, then convert it to weight ratio using molar masses of the compounds used.
     
  4. Feb 16, 2013 #3
    thank you for reply
    so is my method is correct? or wrong?
    can I proceed in the same way?
     
  5. Feb 16, 2013 #4

    Borek

    User Avatar

    Staff: Mentor

    Looks OK to me.
     
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