The melting temperature of a compound A is 280K at 2kPa with an enthalpy of melting of 100J/mol. The density of liquid A is 0.9 g/cm 3 and of solid A of 0.8g/cm 3 . (a) What is the temperature at which liquid-solid are in equilibrium at 5kPa? (b) What is the solute concentration of compound B when it is dissolved in 100mL of liquid A? The measured osmotic pressure of the solution is 0.65kPa at 25°C. (c) What is the freezing temperature of the solution when B is added?

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Solutions

Solutions can be considered as homogeneous mixtures which contain two or more than two chemical substances. The chemical substance which is the greater part is defined as solvent. And the chemical substance that is dissolved in a solvent is referred to as solute. Solution chemistry plays an important role in chemistry since it supports many commercial applications of solutions.