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JEE Main & Advanced Chemistry Solutions / विलयन Question Bank Method of expressing concentration of solution

  • question_answer
    Two solutions of a substance (non electrolyte) are mixed in the following manner 480 ml of 1.5M first solution + 520 mL of 1.2M second solution. What is the molarity of the final mixture             [AIEEE 2005]

    A)                 1.20 M   

    B)                 1.50 M

    C)                 1.344 M

    D)                 2.70 M

    Correct Answer: C

    Solution :

               \[{{M}_{1}}{{V}_{1}}+{{M}_{2}}{{V}_{2}}={{M}_{3}}{{V}_{3}}\];                \[1.5\times 480+1.2\times 520=M\times 1000\]                                 \[M=\frac{720+624}{1000}\] \[=1.344\,M\].


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