Data given... Need help solving for unsolved questions. 348 Experiment 43 Analysis for Vitamin CB. Analysis of an Unknown Sample Containing Vitamin CSampleMass or volume of unknown [g or mL]Initial buret reading [mL]Final buret reading [mL]Volume of 1₂ titrant added [mL]Moles of iodine addedMoles of vitamin C in sampleMass of vitamin C in sample [mg]Concentration of vitamin C: %mass in solid sample or[mg/100 mL] in liquid sampleMean concentrationStandard deviation% massor [mg/100 mL]%mass or [mg/100 mL]I· 100g100g50mL 38mL38.5ml 20mL11.5mL 18mLIIAmount of sample that will furnish nonpregnant female RDI,mL or mgIII A. Standardization of lodine SolutionSampleMass of pure ascorbic acid sample, gMoles of ascorbic acid (MM = 176.14 g/mol)Initial buret reading [mL]Final buret reading [mL]Volume of I, titrant added [mL]Moles of I₂ consumedMolarity of 12 [moles/L]Titer of 1₂ [(mg Asc)/(mL I₂ solution)]III•100g 100g50mL34mL39mL 22mL11mL17mL

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A. Standardization of lodine Solution Sample Mass of pure ascorbic acid sample, g I II · 100g .100g

Fundamentals Of Analytical Chemistry

9th Edition

ISBN:9781285640686

Author:Skoog

Publisher:Skoog

Chapter13: Titrations In Analytical Chemistry

Section: Chapter Questions

Problem 13.28QAP

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Solutions

Solutions can be considered as homogeneous mixtures which contain two or more than two chemical substances. The chemical substance which is the greater part is defined as solvent. And the chemical substance that is dissolved in a solvent is referred to as solute. Solution chemistry plays an important role in chemistry since it supports many commercial applications of solutions.

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348 Experiment 43 Analysis for Vitamin C
B. Analysis of an Unknown Sample Containing Vitamin C
Sample
Mass or volume of unknown [g or mL]
Initial buret reading [mL]
Final buret reading [mL]
Volume of 1₂ titrant added [mL]
Moles of iodine added
Moles of vitamin C in sample
Mass of vitamin C in sample [mg]
Concentration of vitamin C: %mass in solid sample or
[mg/100 mL] in liquid sample
Mean concentration
Standard deviation
% mass
or [mg/100 mL]
%mass or [mg/100 mL]
I
· 100g
100g
50mL 38mL
38.5ml 20mL
11.5mL 18mL
II
Amount of sample that will furnish nonpregnant female RDI,
mL or mg
III

A. Standardization of lodine Solution
Sample
Mass of pure ascorbic acid sample, g
Moles of ascorbic acid (MM = 176.14 g/mol)
Initial buret reading [mL]
Final buret reading [mL]
Volume of I, titrant added [mL]
Moles of I₂ consumed
Molarity of 12 [moles/L]
Titer of 1₂ [(mg Asc)/(mL I₂ solution)]
I
II
•100g 100g
50mL
34mL
39mL 22mL
11mL
17mL

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