how do i get the dilution factor ? then calculate the nitrite level in the undil
ID: 872620 • Letter: H
Question
how do i get the dilution factor ?then calculate the nitrite level in the undiluted sample taking into account the dilution factor?
then calculate a relative spread for the absorbace values of two diluted samples to indicate precision of the test ?? Data Record 1, Molarity of the standardised HCI used in the titration 2. Aliquot (volume) of standardised HCl used for titration Table of titration volumes Sample Initial burette Final burette Number reading (mL) reading (mL) Number adig eaing (mL) Nao m) Nao ) TitrationTitration NaOH (mL) NaOH (L) .Tvolume volume | 0.30 | 25.70 | 2S 40 0.QCqL 0009 30.00 8 S0 2S SON0 023SL
Explanation / Answer
The dilution factor is experimental. To obatain the dilution factor you need to know, the aliquotes you used and the final dilution volume. i.e. You took a 5 mL pipete and filled with undiluted sample, and puted it in a flask of 20mL and filled with distilled water, the dilution factor it 20mL/5mL = 4. Tha means the concentration of the diluted solution is for times smaller that the undiluted, to reverse the calculation multiply the value obtained by the measuring by the dilution factor.
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