Chem_171_Su_08_Q8_Chrom_Tit_Key_Posted-980

Chem_171_Su_08_Q8_Chrom_Tit_Key_Posted-980 - Chem 171 Quiz...

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Chem 171 Quiz 8 Version D 1. In paper chromatography, briefly discuss the effect of increasing the height and increasing the size of the initial spot. Chem 171 Quiz 8 Version A 1 . In the attached paper chromatogram, spots 1,2,3, and 4 are known compounds. What is the composition of unknown #5? The unknown # 5 is a mixture of two compounds Compound 2 Compound 3 2 . The following “fill in the blanks” refer to the lab entitled “Volumetric Analysis: An Acid-Base Titration. a)A primary standard is any highly stable substance whose purity is extremely high from which we can determine the concentration of another solution. b)The difference between the end point and the equivalence point is called the titration error. Chem 171 Quiz 8 Version B 1 . During a paper chromatography experiment, a student obtains two R f values.: R f for A = 0.71 and R f for B = 0.42 . The solvent front for the original chromatogram was 17.0 cm. If A and B are run on a second similar chromatogram with a solvent front
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Chem_171_Su_08_Q8_Chrom_Tit_Key_Posted-980 - Chem 171 Quiz...

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