Quantitative Biuret's test for protien

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A quantitative Biuret test for protein can be achieved by measuring the intensity of the color change produced when proteins react with the Biuret reagent, typically involving spectrophotometry for accurate results. Titration is not commonly used in this context, as the test primarily relies on colorimetric analysis. The brown result may occur if the sample contains high concentrations of certain substances or if the Biuret reagent is improperly prepared. For accurate quantification, standard curves using known protein concentrations are essential. This method provides a reliable way to assess protein levels in various samples.
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Is it possible to make a quantitative test for protien using biurets test - if so how would you do it? Does it involve titration?
 
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Google "quantitave biuret"
 
i can see a lot of things mentioning it but not any telling me how to do it
 
speaking of biuret's, is there a time when this test would give a brown result? I've been researching for AGES. oh PLEASE help a humble student ='O
 
Thread 'Confusion regarding a chemical kinetics problem'

Thread 'Confusion regarding a chemical kinetics problem'

TL;DR Summary: cannot find out error in solution proposed. [![question with rate laws][1]][1] Now the rate law for the reaction (i.e reaction rate) can be written as: $$ R= k[N_2O_5] $$ my main question is, WHAT is this reaction equal to? what I mean here is, whether $$k[N_2O_5]= -d[N_2O_5]/dt$$ or is it $$k[N_2O_5]= -1/2 \frac{d}{dt} [N_2O_5] $$ ? The latter seems to be more apt, as the reaction rate must be -1/2 (disappearance rate of N2O5), which adheres to the stoichiometry of the...
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