Exam (elaborations)
Lab report for instrument analysis 1
- Course
- Institution
It is a Lab report which student often find difficult to perform and pay high for its completion
[Show more]
Seller
Follow
kaurlovedeepmoga
Content preview
FALL 2022 CHEM25415: INSTRUMENTAL ANALYSIS 1LAB REPORT COVER SHEET
Name: Lovedeep Kaur Lab Day and Time: Tuesday and 11 am to 1 pm
Lab Partner: Sonia Rahul Professor: Varvara Pokrovskaya
Experiment Title: Quantitative analysis of calcium in vitamins by standard addition method using AAS
Date Performed: 08-11-2022 Date Submitted: 08-12-2022
Unknown Sample #: CAV #116 Unknown Identity: Life brand spectrum men’s
STATISTICS Mean Final Result Relative Standard True Value @ 95%
Deviation Confidence Interval
Multipoint Method
18% 292.14 mg ± 467.20 mg
292.14 grams
Single Point Method 272.54 grams
25% 272.54 mg ± 609.96 mg
Report Evaluation Summary
A. Lab Report Questions (answers to all questions in Lab Report outline)
B. General Format /6
C. Spelling/Grammar/Clarity of Comments /2
C. Significant Figures and Units /5
D. References (ACS format) /2
E. Accuracy/Unknown Identity and Precision
F. Raw Data (notebook) and Instrumental Output (Grade of zero if missing)
G. Late penalty (10% deduction per day, up to a maximum of 5 days)
# of days late:______ Deduction: 10% 20% 30% 40% 50%
Total Lab Report Mark
Improper Formatting: ______________________________ Incorrect Calculations: ___________________________
Improper Referencing: _____________________ Incomplete/Incorrect Discussion: __________________________
ADDITIONAL COMMENTS:__________________________________________________________________________
_________________________________________________________________________________________________
,Table of Contents
Lab Partner: Sonia Rahul Professor: Varvara Pokrovskaya....................................................................................................1
Experiment Title: Quantitative analysis of calcium in vitamins by standard addition method using AAS.............................1
Laboratory Report Questions................................................................................................................................................1
Quantitative analysis of calcium in vitamins by standard addition method using AAS 08-12-2022......................................1
A – Operating Parameters and Standard Addition Solution Concentrations.........................................................................1
1............................................................................................................................................................................................ 1
(a).......................................................................................................................................................................................... 1
.............................................................................................................................................................................................. 1
5............................................................................................................................................................................................ 3
B – Standard Addition Multipoint Method............................................................................................................................4
6............................................................................................................................................................................................ 4
8............................................................................................................................................................................................ 5
9............................................................................................................................................................................................ 6
C – Standard Addition Single Point Method..........................................................................................................................7
11.......................................................................................................................................................................................... 7
D – Results Summary and Unknown Identification...............................................................................................................9
13.......................................................................................................................................................................................... 9
14......................................................................................................................................................................................... 9
15........................................................................................................................................................................................ 10
E – Discussion...................................................................................................................................................................... 10
16........................................................................................................................................................................................ 10
17........................................................................................................................................................................................ 10
(a) ....................................................................................................................................................................................... 10
(b)........................................................................................................................................................................................ 10
18........................................................................................................................................................................................ 11
References:.......................................................................................................................................................................... 11
Laboratory Report Questions................................................................................................................................................1
A – Operating Parameters and Standard Addition Solution Concentrations.........................................................................1
1............................................................................................................................................................................................ 1
(a).......................................................................................................................................................................................... 1
(b).......................................................................................................................................................................................... 1
2............................................................................................................................................................................................ 1
3............................................................................................................................................................................................ 1
4............................................................................................................................................................................................ 2
, 5............................................................................................................................................................................................ 3
B – Standard Addition Multipoint Method............................................................................................................................4
6............................................................................................................................................................................................ 4
7............................................................................................................................................................................................ 4
8............................................................................................................................................................................................ 5
9............................................................................................................................................................................................ 6
C – Standard Addition Single Point Method..........................................................................................................................7
10.......................................................................................................................................................................................... 7
11.......................................................................................................................................................................................... 7
12.......................................................................................................................................................................................... 8
D – Results Summary and Unknown Identification...............................................................................................................9
13.......................................................................................................................................................................................... 9
14.......................................................................................................................................................................................... 9
15.......................................................................................................................................................................................... 9
E – Discussion...................................................................................................................................................................... 10
16........................................................................................................................................................................................ 10
17........................................................................................................................................................................................ 10
(a)........................................................................................................................................................................................ 10
(b)........................................................................................................................................................................................ 10
18........................................................................................................................................................................................ 10
References:......................................................................................................................................................................... 11
Table 1: AAS spectrometer instrumental settings................................................................................................................1
Table 2: Concentrations and Absorbance Values for Ca2+...................................................................................................2
Table 3: mass of vitamin weighed, slope value and correlation coefficient values...............................................................4
Table 4: mass (mg) of Ca2+ in the original vitamin tablet sample.........................................................................................5
Table 5: mass of Ca2+ per average vitamin tablet (mg/average tablet)...............................................................................6
Table 6: mean mass of Ca2+ per average vitamin tablet (mg/average tablet),absolute standard deviation, relative
standard deviation and true value (μ) at 95%.......................................................................................................................7
Table 7: concentration of Ca2+ in each diluted vitamin tablet sample.................................................................................7
Table 8: mass of Ca 2+ per average vitamin tablet (mg/average tablet)..............................................................................8
Table 9: mean mass of Ca2+ per average vitamin tablet (mg/average tablet), absolute standard deviation, relative
standard deviation and true value at 95% confidence interval for unknown sample...........................................................9
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 kaurlovedeepmoga. Stuvia facilitates payment to the seller.
Will I be stuck with a subscription?
No, you only buy these notes for $100.49. You're not tied to anything after your purchase.
Can Stuvia be trusted?
4.6 stars on Google & Trustpilot (+1000 reviews)
56326 documents were sold in the last 30 days
Founded in 2010, the go-to place to buy study notes for 14 years now