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NEET Sample Paper NEET Sample Test Paper-70

  • question_answer
    An aqueous solution of a weak monobasic acid containing 0.1 g in 21.7g of water freezes at 272.813 K. If the value of \[{{K}_{f}}\] for water is \[1.86\,\,K/m\] what is the molecular mass of the monobasic acid 

    A) 50 g/mole        

    B) 46 g/mole  

    C) 55 g/mole                    

    D) 60 g/mole       

    Correct Answer: D

    Solution :

    \[m=\frac{{{K}_{f}}\times w\times 1000}{\Delta {{T}_{f}}\times W}=60\,g/mole\]


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