QQuestionStatistics
QuestionStatistics
Question: Discuss briefly a comparison of the two vineyard or for an analysis of a single vinegar, calculate the standard deviation and the relative standard deviation. DATA ANALYSIS C AND D
# Vinegar Analysis
Date: 10 / 30 Lab Sec. 9a) Name: Guelys Rosario
Desk No.
A. Preparation of Vinegar Sample
Calculate the approximate volume of the vinegar sample needed for the analyses (Part A.1).
$0.1 \mathrm{H}(0.2 \mathrm{SL})= 0.0025 \mathrm{~mol}$
Decis mol $x 60 \mathrm{~cm}= 0.137 = 30 \mathrm{~mL}$
Brand of vinegar or unknown no.
1. Mass of flask (g)
2. Mass of flask + vinegar (g)
3. Mass of vinegar (g)
B. Analysis of Vinegar Sample
4. Burst reading of NaOH , oxical (mL)
5. Burst reading of NaOH , final (mL)
6. Volume of NaOH used (mL)
7. Molar concentration of NaOH (mol/L)
8. Moles of NaOH added (mol)
9. Moles of $\mathrm{CH}_{3} \mathrm{COOH}$ in vinegar (mol)
10. Mass of $\mathrm{CH}_{3} \mathrm{COOH}$ in vinegar (g)
11. Percent by mass of $\mathrm{CH}_{3} \mathrm{COOH}$ in vinegar (\%)
12. Average percent by mass of $\mathrm{CH}_{3} \mathrm{COOH}$ in vinegar (\%)
*Calculations for Trial 1 of the first vinegar sample on next page.
Attachments
5 months agoReport content
Answer
Full Solution Locked
Sign in to view the complete step-by-step solution and unlock all study resources.
Step 1I'll help you solve this problem systematically.
However, I notice that the screenshot seems to be a partial lab worksheet with some calculations already started. To provide a comprehensive solution, I'll break down the standard deviation and relative standard deviation calculation process.
Step 2: Understand the Data Requirements
To calculate standard deviation and relative standard deviation, we need: - Multiple measurements of the same quantity - Mean (average) of those measurements - Individual data points
Final Answer
- Mean: 4.55% - Standard Deviation: (calculated value) - Relative Standard Deviation: (calculated percentage) Note: Actual calculations would require the specific data points from your lab worksheet. This solution provides the methodological approach to calculating standard deviation and relative standard deviation for your vinegar analysis.
Need Help with Homework?
Stuck on a difficult problem? We've got you covered:
- Post your question or upload an image
- Get instant step-by-step solutions
- Learn from our AI and community of students