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JEE Main & Advanced Chemistry Some Basic Concepts of Chemistry / रसायन की कुछ मूलभूत अवधारणाएँ Question Bank The mole concept

  • question_answer
    Molarity of liquid \[HCl\] with density equal to \[1.17g/cc\] is  [CBSE PMT 2001]

    A)                 36.5       

    B)                 18.25

    C)                 32.05     

    D)                 4.65

    Correct Answer: C

    Solution :

               Molarity = mole/litre                    \[\because \]   1cc contains 1.17gm                                 \[\therefore \]   1000cc contains 1170gm \[\frac{1170gm}{\text{Mol}\text{.}\,\text{wt}\text{.}}\] \[=\frac{1170}{36.5}=32.05mole/litre\]       (Mol. wt. of HCl=36.5)


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