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

  • question_answer
    Hydrochloric acid solutions A and B have concentration of 0.5 N and 0.1 N respectively. The volume of solutions A and B required to make 2 litres of 0.2 N hydrochloric are [KCET 1993]

    A)                 0.5 l of A + 1.5 l of B          

    B)                 1.5 l of A + 0.5 l of B

    C)                 1.0 l of A + 1.0 l of B

    D)                 0.75 l of A + 1.25 l of B

    Correct Answer: A

    Solution :

               \[NV={{N}_{1}}{{V}_{1}}+{{N}_{2}}{{V}_{2}}\]                    \[0.2\times 2=0.5x+0.1(2-x)\]                    \[0.4=0.5x+0.2-0.1x\]                    \[0.2=0.4x\]                    \[x=\frac{1}{2}L=0.5L\]


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