2. The CuSO4 solution obtained after processing the sample of slag (m=2 g) was transferred into a flask with a capacity of 100 ml, ammonia solution and water were added to it up to the mark. A series of standards was prepared from five solutions containing 1.0; 2.0; 3.0; 4.0 and 5.0 mmol/L Cu. With the same layer thickness, the color intensity of the sample solution coincided with the color of the third standard solution. Calculate the percentage of copper in the slag.

If you do not open the file - install the RAR archiver. Inside the archive you will find a solution in Word format.