NEET AIPMT SOLVED PAPER 2003

  • question_answer                 Formation of a solution from two components can be considered as:                                                      (1) pure solvent \[\to \] separated solvent molecules, \[\Delta {{H}_{1}}\]                 (2) pure solute \[\to \] separated solute molecules, \[\Delta {{H}_{2}}\]                 (3) separated solvent and solute molecules \[\to \] solution, \[\Delta {{H}_{3}}\]                         Solution so formed will be ideal if:

    A)                 \[\Delta {{H}_{so\ln }}=\Delta {{H}_{1}}-\Delta {{H}_{2}}-\Delta {{H}_{3}}\]                                               

    B)                 \[\Delta {{H}_{so\ln }}=\Delta {{H}_{3}}-\Delta {{H}_{1}}-\Delta {{H}_{2}}\]

    C)                 \[\Delta {{H}_{so\ln }}=\Delta {{H}_{1}}+\Delta {{H}_{2}}+\Delta {{H}_{3}}\]                             

    D)                 \[\Delta {{H}_{so\ln }}=\Delta {{H}_{1}}+\Delta {{H}_{2}}-\Delta {{H}_{3}}\]

    Correct Answer: C

    Solution :

                    For ideal solution,                 \[\Delta {{H}_{solution}}=\Delta {{H}_{1}}+\Delta {{H}_{2}}+\Delta {{H}_{3}}\]

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