Friday
April 25, 2014

Homework Help: Chemistry

Posted by Nina on Wednesday, October 8, 2008 at 9:44pm.

A student performs a crystallization on an impure sample of biphenyl. The sample weighs 0.5 g and contains about 5% impurity. Based on his knowledge of solubility the student decides to use benzene as the solvent. After crystallization, the crystals are dried and the final weight is found to be 0.02 g. Assume that all the steps in the crystallization are performed correctly, there are no spills, and the student lost very littly solid on any glassware or in any of the transfers. Why is the recovery so low?

thanks so much in advance!

Answer this Question

First Name:
School Subject:
Answer:

Related Questions

Low recovery - The question is: A student performs a crystallization on an ...
Science - So a crystallization experiment was performed using an impure sample ...
Chemistry - A student is given a sample in lab which contains one of the ions ...
Chemistry - A student is given a sample in lab which contains one of the ions ...
chemistry - CrCl3(s) + AgNO3 (aq)= AgCl(s) + Cr(NO3)3(aq) A 0.750 g sample of ...
Organic Chemistry - A student purified a 3.88 g sample of phthalic acid by ...
Organic Chemistry - An impure sample contains 0.95g of benzoic acid and 0.05 of ...
general chemistry - A student needs to determine by titration with NaOH the ...
statistics - The sample mean for a recent introductory psychology test was 78, ...
Chemistry - An impure sample of substance X melts at about 113 degress. Which of...

Search
Members