Obtaining the freezing point Depression of the sample in ice bath with one trail below:The solvent picked will be of water: Urea (CO(NH2)2 , 60.06 g/mol) Measurement: the empty 100 graduated cylinder is 144.422g; temp vs. solvent with water is weighed at 15.136g. The tempeture was -7 degrees, the results were -1.5 celsius. The urea weighed with H2O is 15.088g. Address the percent error:a) How far off were they and what might be causing any differences? Be more specific than simply stating “human error”. b) Based on the percent error, do you consider the experimental methodreliable? Explain. c) Do you think you could have identified an unknown solid using thismethod?
Obtaining the freezing point Depression of the sample in ice bath with one trail below:The solvent picked will be of water: Urea (CO(NH2)2 , 60.06 g/mol) Measurement: the empty 100 graduated cylinder is 144.422g; temp vs. solvent with water is weighed at 15.136g. The tempeture was -7 degrees, the results were -1.5 celsius. The urea weighed with H2O is 15.088g. Address the percent error:a) How far off were they and what might be causing any differences? Be more specific than simply stating “human error”. b) Based on the percent error, do you consider the experimental methodreliable? Explain. c) Do you think you could have identified an unknown solid using thismethod?
Chemistry: Matter and Change
1st Edition
ISBN:9780078746376
Author:Dinah Zike, Laurel Dingrando, Nicholas Hainen, Cheryl Wistrom
Publisher:Dinah Zike, Laurel Dingrando, Nicholas Hainen, Cheryl Wistrom
Chapter14: Mixtures And Solutions
Section: Chapter Questions
Problem 106A: Which solute has the greatest effect on the boiling pointof 1.00 kg of water: 50.0 g of strontium...
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Obtaining the freezing point Depression of the sample in ice bath with one trail below:The solvent picked will be of water: Urea (CO(NH2)2 , 60.06 g/mol) Measurement: the empty 100 graduated cylinder is 144.422g; temp vs. solvent with water is weighed at 15.136g. The tempeture was -7 degrees, the results were -1.5 celsius. The urea weighed with H2O is 15.088g.
Address the percent error:
a) How far off were they and what might be causing any differences? Be more specific than simply stating “human error”.
b) Based on the percent error, do you consider the experimental method
reliable? Explain.
c) Do you think you could have identified an unknown solid using this
method?
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