EBooks
- Arts & Culture 6213
- 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
Solving a chemistry problem
Uploaded:
05.10.2023
Content: 2.zip 44,85 kB
Content: 2.zip 44,85 kB
Product description
2. In standard solutions of potassium salt with concentration C(K+), the electrode potentials of the potassium-selective electrode relative to the silver chloride electrode were measured:
C (K+), mol/l 1× 10-1 1× 10-2 1× 10-3 1× 10-4
E, mV 100 46.0 -7.00 -60.0
Based on these data, a calibration graph was constructed in E–pC (K+) coordinates.
A sample weighing 0.2000 g containing potassium was dissolved in water, and the volume was brought to 25.00 ml. Then we measured the electrode potential Ex = 34.0
Calculate the mass fraction (%) of K in the sample.
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 | |