2. For the drug "Furacilin" (FS 42-2522-88), plot a graph of the dependence of optical density on concentration at a wavelength of 375 nm and calculate E1% 1 cm using the table data.

C * 10 ^ 4 % furacilin | 5 | 6 | 7 | 8 | 9 | 10 |
Optical density | 0.326 | 0.392 | 0.458 | 0.522 | 0.589 | 0.655 |

Calculate the concentration of furacilin using the calibration graph and the found value of E1% 1 cm.
Determination method. About 0.02 g (exact mass) of furacilin is dissolved in water in a 100 ml measuring flask and brought to the mark with water. Add 9.5 ml of water to 0.5 ml of the resulting solution, mix and measure the optical density on a spectrophotometer in a cuvette with an absorbing layer thickness of 10 mm relative to water. The optical density of the resulting solution is 0.650. The exact mass of the preparation is 0.0200 g.

If you cannot open the file or have any problems, do not rush to leave a negative review! Contact me and I will quickly help you solve the problem. After purchasing, please leave a positive review of the product :)