question_answer

Define the following terms. (i) Mole fraction,                              (ii) Molality.                                                                                                                    [1+1]

Answer:

  (i) Mole fraction Mole fraction of a component (1) is the ratio of the moles of that component (1) and that of total moles in the mixture of (1) and (2) or more moles of component (1)  moles of component (2) total moles Then mole fraction of the components (1) and (2) are In general (component i)                                 [1] (ii) Molality is the concentration in moles of solute per kg of solvent. g solute is present insolvent. Moles of solute Solvent Then molality molality Mole fraction and molality both are not affected by change in temperature.              [1]