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NEET Sample Paper NEET Sample Test Paper-69

  • question_answer
    For a binary ideal liquid solution, the total pressure of the solution is given as

    A) \[{{P}_{total}}\,=\,\,P_{A}^{*}+({{P}_{A}}^{*}-{{P}_{B}}^{*}){{X}_{A}}\]

    B) \[{{P}_{total}}\,=\,\,P_{B}^{*}+({{P}_{B}}^{*}-{{P}_{A}}^{*}){{X}_{A}}\]

    C) \[{{P}_{total}}\,=\,\,P_{A}^{*}+({{P}_{B}}^{*}-{{P}_{A}}^{*}){{X}_{A}}\]

    D) \[{{P}_{total}}\,=\,\,P_{B}^{*}+({{P}_{B}}^{*}-{{P}_{A}}^{*}){{X}_{A}}\]

    Correct Answer: B

    Solution :

    Since we know \[{{P}_{T}}={{P}_{A}}^{*}{{X}_{A}}+{{P}_{B}}^{*}{{X}_{B}}\] \[=\,\,\,P_{A}^{*}{{X}_{A}}+{{P}_{B}}^{*}(1-{{X}_{A}})\] \[{{P}_{total}}={{P}_{B}}^{*}\,+({{P}_{A}}^{*}-{{P}_{B}}^{*}){{X}_{A}}\]


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