51. Option 2 A standard cerium solution was prepared by
Reviews 0
The sale of this product is suspended.
The seller is blocked and sales of the product are suspended
Product description
51. Option 2
A standard cerium solution was prepared by dissolving 0.0500 g in a 250.0 ml mixture of perchloric and hydrochloric acids. In flasks with a capacity of 25.00 ml were placed: 2.50; 3.00; 3.50; 4.00; 4.50; 5.00 ml of standard solution, ammonia, hydrogen peroxide, nitrilotriacetic acid was added and diluted to the mark with water. When photometry relative to the first solution received:
Vst, ml 3.00; 3.50; 4.00; 4.50; 5.00
Aot 0.135 0.270 0.405 0.545 0.680
A portion of lanthanide oxides with a mass of 0.0500 g was dissolved, the necessary reagents were added, diluted to 25.00 ml, and photometric, as in the construction of the calibration curve.
Calculate the mass fraction in the sample of lanthanide oxides using the following data.
Aoth. X = 0,440
A standard cerium solution was prepared by dissolving 0.0500 g in a 250.0 ml mixture of perchloric and hydrochloric acids. In flasks with a capacity of 25.00 ml were placed: 2.50; 3.00; 3.50; 4.00; 4.50; 5.00 ml of standard solution, ammonia, hydrogen peroxide, nitrilotriacetic acid was added and diluted to the mark with water. When photometry relative to the first solution received:
Vst, ml 3.00; 3.50; 4.00; 4.50; 5.00
Aot 0.135 0.270 0.405 0.545 0.680
A portion of lanthanide oxides with a mass of 0.0500 g was dissolved, the necessary reagents were added, diluted to 25.00 ml, and photometric, as in the construction of the calibration curve.
Calculate the mass fraction in the sample of lanthanide oxides using the following data.
Aoth. X = 0,440
Main features
- Content type File
- Content description 41,7 kB
- Added to the site 05.08.2019
Additional description
If you do not open the file - install the RAR archiver. Inside the archive you will find a solution in Word format.
Reviews
No reviews yet
The sale of this product is suspended.
ученьеСвет
Blocked
ученьеСвет
Blocked