- Arts & Culture 6231
- Business & Economics 674
- Computers 316
- Dictionaries & Encyclopedias 74
- Education & Science 76877
- Abstracts 73
- Astrology 4
- Biology 8
- Chemistry 4046
- Coursework 15549
- Culture 8
- Diplomas 316
- Drawings 1595
- Ecology 5
- Economy 76
- English 80
- Ethics, Aesthetics 3
- For Education Students 17573
- Foreign Languages 11
- Geography 3
- Geology 1
- History 88
- Maps & Atlases 5
- Mathematics 12624
- Musical Literature 2
- Pedagogics 19
- Philosophy 22
- Physics 15120
- Political Science 5
- Practical Work 59
- Psychology 63
- Religion 4
- Russian and culture of speech 8
- School Textbooks 7
- Sociology 9
- Summaries, Cribs 87
- Test Answers 160
- Tests 8747
- 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 893
- Fiction 706
- House, Family & Entertainment 84
- Law 129
- Website Promotion 68
112. Solving a chemistry problem
Content: 61б.rar 14,88 kB
Product description
61b. Furacilin has its own light absorption in the visible region of the spectrum. For the photometric determination of furatsilin considered below using the FEK-56 photoelectrocolorimeter, select a light filter (indicate its number) according to the following data:
Filter number 2 3 4 5 6 7
Maximum filtrate transmission, nm 364 400 440 490 540 590
Optical density of furacilin solution 0.21 0.31 0.71 0.38 0.30 0.23
Using the data below, using the method of one standard, calculate the content (mg) of furacilin in C ml of the analyzed solution, if, when measured under the same conditions with the selected filter, the optical density of the analyzed solution of furacilin turned out to be A (X), and the optical density of the standard solution c concentration of Cst furatsilina - Ast.
What condition is mandatory for the photometric determination of a substance in the studied concentration range using the single standard method?
Option b
V, ml100
A(X) 0.42
Cst mg/ml 0.016
Ast 0.45
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 | |