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JEE Main & Advanced Chemistry Some Basic Concepts of Chemistry / रसायन की कुछ मूलभूत अवधारणाएँ Question Bank Self Evaluation Test - Some Basic Concepts of Chemistry

  • question_answer
    1.575 g of oxalic acid \[{{(COOH)}_{2}}.x{{H}_{2}}O\] are dissolved in water and the volume made up to 250 mL. On titration 16.68 mL of this solution requires 25 mL of N/15 NaOH solution for complete neutralization, calculate x.

    A) 3                     

    B) 2    

    C) 4                                 

    D) 5

    Correct Answer: B

    Solution :

    [b] Meq of oxalic acid in 16.68 ml = Meq of NaOH \[=25\times \frac{1}{25}\] Meq of oxalic acid in 250 ml \[=25\times \frac{1}{15}\times \frac{250}{16.68}=24.98\] \[\frac{1.575}{(90+18x)/2}\times 1000=24.98\] \[\therefore x=2\]


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