74. Solving a chemistry problem
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Product description
- At a temperature T, the vapor pressure of a solution of concentration c of an unknown non-volatile substance in a liquid solvent is equal to R Pa; the density of this solution d.
The dependence of saturated vapor pressure on temperature over a liquid and solid pure solvent is given in the table:
- calculate the molecular weight of the solute;
- determine the molar and molar concentrations of the solution;
- calculate the osmotic pressure of the solution;
- build a curve P = f (T) for a given solution and solvent; Use the data from task 3 of the corresponding option characterizing the solvent.
- determine graphically the temperature at which the vapor pressure over the pure solvent will be equal to R Pa;
- determine graphically the increase in the boiling point at a pressure P of a solution of a given concentration,
- calculate the ebullioscopic constant;
- determine the drop in the freezing point of the solution;
- Calculate the cryoscopic constant.
Option Mass fraction of non-volatile substance, % Molar mass of solvent P,Pa T,K d .10-3 kg/m3
6 9 34 55000 207 1.985
Additional information
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