chemistry

posted by .

This is for organic chem lab.
I don't understand how to calculate the relative Rf values by setting ibuprofen to 1.00. For example, my Rf value for aspirin is 0.046, so how do I calculate the Rf relative to ibuprofen (1.00)?
My experimental data for ibuprofen is 0.55 if that helps.

  • chemistry -

    In essence you need

    1.00 x 0.046/0.55

    imagine that the solvent front has moved 10 cm then the ibuprofen spot has moved 5.5 cm and the aspirin spot has moved 0.46 cm. So if we take the ibuprofen as Rf = 1.00 then the distances travelled by other spots are relative to this. So the Rf of the aspirin is 0.46 cm/5.5 cm (relative to ibuprofen).

Respond to this Question

First Name
School Subject
Your Answer

Similar Questions

  1. Chemistry

    How do you find Absolute error and how do you find relative error?
  2. algebra

    1. How to find the numbers, if there are any, at which f has a realtive minimum. What is the realive minima?
  3. chemistry

    Based on the experimental data, I was able to calculate the experimental pKa value which is 5.04 and the literature value of the pKa for KHP is 5.51. If I would be computing for the relative error between the two pKa's it would be …
  4. differentiability

    If g is a differentiable function such that g(x) is less than 0 for all real numbers x and if f prime of x equals (x2-4)*g(x), which of the following is true?
  5. calculus

    If g is a differentiable function such that g(x) is less than 0 for all real numbers x and if f'(x)=(x2-4)g(x), which of the following is true?
  6. Ochem

    By looking at the chemical structures of acetaminophen, aspirin, caffeine, ibuprofen, and naproxin sodium, how are you able to determine the relative polarity of each?
  7. chemistry - synthesis of aspirin

    This is an experiment for a synthesis of aspirin lab mass of salicylic acid = 2.005 g mass of acetic acid = ?
  8. chem

    How many grams of ibuprofen contain 7.1x10^25 atoms of C?
  9. Chemistry

    Rank the following from most polar to least polar (aspirin, caffeine, ibuprofen, acetaminophen): I am getting caffeine>acetaminophen>aspirin>ibuprofen. Is that correct?
  10. Calculus

    Find the values of x that give relative extrema for the function f(x)=3x^5-5x^3 A. Relative maximum: x= 1; Relative minimum: x=sqrt(5/3) B. Relative maximum: x=-1; Relative minimum: x=1 C. Relative maxima: x=+or- 1; Relative minimum: …

More Similar Questions