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JEE Main & Advanced Chemistry Some Basic Concepts of Chemistry / रसायन की कुछ मूलभूत अवधारणाएँ Question Bank Chemical stoichiometry

  • question_answer
    0.16 g of dibasic acid required 25 ml of decinormal NaOH solution for complete neutralisation. The molecular weight of the acid will be                                         [CPMT 1989]

    A)                 32          

    B)                 64

    C)                 128        

    D)                 256

    Correct Answer: C

    Solution :

               Dibasic acid NaOH; \[{{N}_{1}}{{V}_{1}}={{N}_{2}}{{V}_{2}}\]                    \[\frac{W}{E}\times 1000=\frac{1}{10}\times 25\]; \[\frac{0.16}{E}\times 1000=\frac{25}{10}\]                                 \[M=2\times E=2\times 64=128\].


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