Other
CHEM 162 Experiment #5: Spectrochemical Series complete solution
- Institution
- University Of Washington
CHEM 162 Experiment #5: Spectrochemical Series complete solution
[Show more]
2 reviews
By: truneedsfood • 2 year ago
By: victoriala114 • 3 year ago
Content preview
NAME: Anh-Khoa Duong STUDENT ID #: 1960254QUIZ SECTION: CI
Laboratory Waste Evaluation
Laboratory waste is considered anything generated during an experiment that is disposed of down the sewer drain, thrown in the garbage, collected in a container for disposal by the UW Environmental Health & Safety department, or released into the environment. Based on the written lab procedure andyour actions during the lab, list the identity and approximate amount (mass or volume) of waste that you generated while performing this experiment. -~0.25 g NH2CH2CO2H
-~0.5 g CuSO4*5H2O
-~1L DI water
-~2filter paper
-~20mL copper complexes
-~10 mL iron complexes
-~6 mL cobalt complexes
-~4 papertowels
-~5 kim wipesCHEM 162 Experiment #5: Spectrochemical Series
Goals of this lab:
•Produce a copper coordination compound and evaluate the yield
•Calculate d -orbital splitting energies from spectral data in nanometers •Apply Crystal Field Theory to the comparison of ligand field strengths among groups of coordination complexes
•Assess the accuracy of experimental data and identify sources of error
Your lab report will be graded on the following criteria using a poor/good/excellent rating system :
•Calculations are complete are accurate, with proper use of significant figures and units
•Data collected is reasonable
•Lab report is clear, legible, and neat
•Error analysis is well -supported and valid
By signing below, you certify that you have not falsified data, that you have not plagiarized any part of this lab report, and that all calculations and responses other than the reporting of raw data are your own independent work. Failure to sign this declaration will result in 5 points being deducted from your lab score.
Signature: Nick
This lab is worth 60 points: 10 points for notebook pages, 50 points for the lab report.
(Do NOT include your notebook pages when you scan your report for upload into Gradescope.)
1 of 5This study source was downloaded by 100000829943187 from CourseHero.com on 08-04-2021 20:17:02 GMT -05:00
https://www.coursehero.com/file/71695947/Experiment-5-Chem-162-AKNDpdf/This study resource was
shared via CourseHero.com NAME: STUDENT ID #:
Part A: Preparation of cis-Bis(glycinato)copper(II) monohydrate, Cu(gly) 2·H2O
mass CuSO 4·5H2O g
mass NH 2CH 2CO 2H (glycine) g
molar mass CuSO 4·5H2O g/mole
moles CuSO 4·5H2O moles
molar mass NH 2CH 2CO 2H (glycine) g/mole
moles NH 2CH 2CO 2H (glycine) moles
limiting reagent is
molar mass Cu(gly) 2·H2O g/mole
(Note for molar mass: each glycine loses the acidic proton in order to be a bidentate ligand)
mass Cu(gly) 2·H2O expected based on limiting reagent g
mass Cu(gly) 2·H2O recovered g
% Yield %0.003290
glycine
0.3779
0.3290
87.06229.700.4990
0.2470
249.70
0.001998
75.070
Discuss your % yield. It is high or low? What are the contributing factors to this high or low % yield?
% yield = (experimental / theoretical) * 100 => (0.3290 g/ 0.3779 g) * 100 = 87.06% yield
The percent yield was slightly lower, this may have been caused by adding too little of sodium bicarbonate or accidentally rinsing the precipitate with water.Note: the molecular formula for the complex will give you information about the reaction stoichiometry for determining the limiting reagent.
2 of 5This study source was downloaded by 100000829943187 from CourseHero.com on 08-04-2021 20:17:02 GMT -05:00
https://www.coursehero.com/file/71695947/Experiment-5-Chem-162-AKNDpdf/This study resource was
shared via CourseHero.com
The benefits of buying summaries with Stuvia:
Guaranteed quality through customer reviews
Stuvia customers have reviewed more than 700,000 summaries. This how you know that you are buying the best documents.
Quick and easy check-out
You can quickly pay through credit card or Stuvia-credit for the summaries. There is no membership needed.
Focus on what matters
Your fellow students write the study notes themselves, which is why the documents are always reliable and up-to-date. This ensures you quickly get to the core!
Frequently asked questions
What do I get when I buy this document?
You get a PDF, available immediately after your purchase. The purchased document is accessible anytime, anywhere and indefinitely through your profile.
Satisfaction guarantee: how does it work?
Our satisfaction guarantee ensures that you always find a study document that suits you well. You fill out a form, and our customer service team takes care of the rest.
Who am I buying these notes from?
Stuvia is a marketplace, so you are not buying this document from us, but from seller smartzone. Stuvia facilitates payment to the seller.
Will I be stuck with a subscription?
No, you only buy these notes for $10.79. You're not tied to anything after your purchase.
Can Stuvia be trusted?
4.6 stars on Google & Trustpilot (+1000 reviews)
53920 documents were sold in the last 30 days
Founded in 2010, the go-to place to buy study notes for 14 years now