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

  • question_answer
    5 ml of N HCl, 20 ml of \[N/2\,\,{{H}_{2}}S{{O}_{4}}\] and 30 ml of \[N/3\,\,HN{{O}_{3}}\] are mixed together and volume made to one litre. The normality of the resulting solution is           [MNR 1991]

    A)                 \[N/5\]    

    B)                 \[N/10\]

    C)                 \[N/20\]  

    D)                 \[N/40\]

    Correct Answer: D

    Solution :

               \[NV={{N}_{1}}{{V}_{1}}+{{N}_{2}}{{V}_{2}}+{{N}_{3}}{{V}_{3}}\]                    \[N\times 1000=1\times 5+\frac{1}{2}\times 20+\frac{1}{3}\times \]30\[=5+10+10=25\]                                 \[N=0.025=\frac{N}{40}\].


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