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AFMC AFMC Solved Paper-2005

  • question_answer
    A 5 molar solution \[{{\text{H}}_{\text{2}}}\text{S}{{\text{O}}_{\text{4}}}\] is diluted from 1 L to 10 L. What is the normality of the solution?

    A) 0.25 N  

    B) 1 N

    C) 2 N                                        

    D) 7 N

    Correct Answer: B

    Solution :

    Molarity \[({{M}_{1}})\]of \[{{H}_{2}}S{{O}_{4}}=5\,M\] \[Normality\,({{N}_{1}})=molarity\times basicity\] \[=5\times 2=10N\] \[{{V}_{1}}=1\,L\] \[{{V}_{2}}=1\,0\,L\] According to principle of dilution number of equivalent before dilution = number of equivalent after dilution                                                                 \[{{N}_{1}}{{V}_{1}}={{N}_{2}}{{V}_{2}}\]                                                                 \[10\times 1={{N}_{2}}\times 10\]                                                                 \[{{N}_{2}}=1\,N\]


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