- Arts & Culture 6242
- Business & Economics 673
- Computers 316
- Dictionaries & Encyclopedias 74
- Education & Science 77001
- Abstracts 73
- Astrology 4
- Biology 8
- Chemistry 4046
- Coursework 15557
- Culture 8
- Diplomas 317
- Drawings 1595
- Ecology 5
- Economy 81
- English 80
- Ethics, Aesthetics 3
- For Education Students 17674
- Foreign Languages 11
- Geography 3
- Geology 1
- History 88
- Maps & Atlases 5
- Mathematics 12624
- Musical Literature 2
- Pedagogics 21
- Philosophy 22
- Physics 15120
- Political Science 5
- Practical Work 59
- Psychology 64
- Religion 4
- Russian and culture of speech 8
- School Textbooks 7
- Sociology 9
- Summaries, Cribs 87
- Test Answers 160
- Tests 8753
- Textbooks for Colleges and Universities 32
- Theses 7
- To Help Graduate Students 14
- To Help the Entrant 38
- Vetting 385
- Works 13
- Информатика 8
- Engineering 891
- Fiction 706
- House, Family & Entertainment 76
- Law 130
- Website Promotion 70
28. Solving a chemistry problem
Content: 16в.rar 51,91 kB
Product description
16th century The analyzed sample of Mohr´s salt weighing 0.3887 g was dissolved in dilute sulfuric acid, after which the potentiometric titration of iron(II) was carried out with a standard solution of cerium(IV) sulfate with a molar equivalent concentration of 0.04955 mol/l and the following results were obtained (V is the volume of added titrant, E is the EMF of the circuit):
V, ml 14.00 18.00 19.00 19.80 20.00 20.20 21.00 22.00 26.00
E, mV 736 780 810 877 1098 1320 1393 1424 1469
Calculate the mass fraction (%) of iron(II) in the analyzed sample, using the following method to determine the equivalence point (TE).
Which electrodes (platinum, calomel, silver chloride, glass) can be used as an indicator electrode, and which ones can be used as a reference electrode for this titration?
c) Graphical (Gran´s method) - along the titration curve * in the coordinates ΔV / ΔE-V
Additional information
If you do not open the file - install the RAR archiver. Inside the archive you will find a solution in Word format.
Feedback
0| Period | |||
| 1 month | 3 months | 12 months | |
| 0 | 0 | 0 | |
| 0 | 0 | 0 | |