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

  • question_answer
    To neutralize completely 20 mL of 0.l M aqueous solution of phosphorus (\[{{H}_{3}}P{{O}_{3}}\]) acid the volume of 0.1 M aqueous KOH solution required is

    A) 60 mL  

    B) 20 mL

    C) 40 mL

    D) 10 mL

    Correct Answer: C

    Solution :

    Meq. of \[{{H}_{3}}P{{O}_{3}}\]= Meq. of KOH \[{{M}_{1}}{{V}_{1}}\times \]Basicity = \[{{M}_{2}}{{V}_{2}}\times \]Acidity \[20\times 0.1\times 2=V\times 0.1\times 1\] \[\therefore \] V=40 mL  


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