67. Solving a chemistry problem

10. Carbon tetrachloride and carbon disulfide are infinitely soluble in each other. Construct a boiling diagram using the following data:

CCl4, in liquid phase, mol.% 0 20 40 50 60 80 100
CCl4, in vapor, mol.% 0 9.4 20 26 34 58 100
Boiling point, mixture, °С 46 50 53 56 59 67 77

Determine the composition of vapor and liquid in volume % for a mixture boiling at 55°C, and indicate which type of system this mixture belongs to.