215. For invertose, the dependence on t C is expressed by a power series:
αt = –20 – 0.304(t – 20) 1.68 10–3(t – 20)2.

Determine the concentration of invertose (g / l) in a solution at 25 ° C, if for a tube of 25 cm the angle of rotation of the polarization plane is -1.38 °.

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