Post a New Question

chemistry

posted by .

Melting point experiment: how do i know the calibration curve?

we did an experiment where:

week one we did a graph with the melting points of different compounds.
week 2 we used the graph to correct the melting point of unknown # 1 and then unknown # 2
we mixed unknown 2 with other compounds to determine what it is.

now i have to state what the calibration curve is but the teacher did not explain. how do i do this?
we find one unknown and its melting point

  • chemistry -

    Your post is not clear, at least not to me. Perhaps another tutor can figure it out.

  • chemistry -

    this is what i have so far..



    A. unknown 1
    melting point range (uncorr) 50.0-53.0
    melting point range (corr) 50.2-53.2 (because of graph from part 1 of experiment)
    melting point average 51.7

    b unknown 2
    melting point range (uncorr) 65.0-67.0
    melting point range (corr) 65.6-67.6 (because of graph from part 1 of experiment)
    melting point average 66.6

    mix melting point range of unknown 2 with

    compount mp range
    benzhydrol 65.0-67.0
    phenylbenzoate 63.0-70.0
    bephenyl 67.0-69.0

    unknown 2 is benshydrol

    II.
    include your calibration curve with this report. after the calibration curve is returned to you, tape it in your lab notebook

    how do I do this???

Respond to this Question

First Name
School Subject
Your Answer

Similar Questions

  1. Chemistry

    A student who was isolating aspirin stopped the experiment after filtration step alumina. One week later, the methanol was evaporated and the experiment was completed. The melting point of the aspirin was found to be 110-115 degrees …
  2. Chemistry

    Student in O-Chem Lab conducts a melting point experiment with an unknown compound and observes a melting range of 210 – 218C. Is this a typical range for a melting point?
  3. org. chem.

    A student who was isolating aspirin stopped the experiment after the filtration step with alumina. One week later, the methanol was evaporated and the experiment was completed. The melting point of the aspirin was found to be 110-115 …
  4. chemistry

    A student decided to extract aspirin from a tablet. After the alumina filtration step, he stopped the experiment for a week. then he evaporated the methanol and completed the procedure. the melting point of his recovered material was …
  5. organic chemistry

    The isolation process of aspirin was stopped after the filtration step with alumina and one week later the methanol was evaporated and the experiment was completed. The melting point of the aspirin was found to be 110-115 Celsius. …
  6. chemistry

    I did a lab about melting point. It is asking me for the purity of the compounds?
  7. chemistry

    a graph of melting point against relative atomic mass for the alkali metals on the same graph, a plot of the boiling points with a sentence to describe the information the graph gives
  8. chemistry

    this is what my lab report looks like (minus the graph of the first part) im stuck on part II I. A. unknown 1 melting point range (uncorr) 50.0-53.0 melting point range (corr) 50.2-53.2 (because of graph from part 1 of experiment) …
  9. Chemistry

    1) For a freezing point depression experiment we had to create an ice bath and add salt to the ice. I have to answer the question, why was salting the ice necessary in order to complete the experiment and how does this apply to the …
  10. chemistry help meee

    okay so I'm given a graph of a melting profile of a macromolecule, it is a sigmoid "s" curve, which states that a protein is cooperative. I have four choices on what the graph will look like if it is uncooperative. 1) Graph 1- straight …

More Similar Questions

Post a New Question