31. Solving a chemistry problem5
Seller: Derkach
Price: 1.20 USD
Available. The final price depends on the selected options and is checked before payment.
Product description
- An unknown amount of lead(II) solution with a volume of 15.00 ml is titrated with a 0.0010 M EDTA solution in the presence of 4-(2-pyridylazo)-resorcinol at pH 9.5 and λ=516 nm to a constant value A=0.15 . The optical densities corresponding to the added titrant volumes of 2.5 and 3.5 ml are 0.65 and 0.25, respectively. Calculate the mass of lead in solution. (0.774 mg)
Additional information
If the file does not open for you, install the Rar archiver program. Inside the archive, the solution is in WORD format.